diff --git a/src/all/mango/build.gradle b/src/all/mango/build.gradle
index 2970d5089..f1da8de87 100644
--- a/src/all/mango/build.gradle
+++ b/src/all/mango/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Mango'
diff --git a/src/all/mango/src/eu/kanade/tachiyomi/extension/all/mango/Mango.kt b/src/all/mango/src/eu/kanade/tachiyomi/extension/all/mango/Mango.kt
index 81286964a..1fbbe78ce 100644
--- a/src/all/mango/src/eu/kanade/tachiyomi/extension/all/mango/Mango.kt
+++ b/src/all/mango/src/eu/kanade/tachiyomi/extension/all/mango/Mango.kt
@@ -4,11 +4,6 @@ import android.app.Application
 import android.content.SharedPreferences
 import android.text.InputType
 import android.widget.Toast
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.get
-import com.google.gson.Gson
-import com.google.gson.JsonObject
-import com.google.gson.JsonSyntaxException
 import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.POST
@@ -22,6 +17,13 @@ import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
 import info.debatty.java.stringsimilarity.JaroWinkler
 import info.debatty.java.stringsimilarity.Levenshtein
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import kotlinx.serialization.json.long
 import okhttp3.Dns
 import okhttp3.FormBody
 import okhttp3.Headers
@@ -33,6 +35,7 @@ import okhttp3.Response
 import rx.Observable
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
+import uy.kohesive.injekt.injectLazy
 import java.io.IOException
 
 class Mango : ConfigurableSource, HttpSource() {
@@ -43,18 +46,18 @@ class Mango : ConfigurableSource, HttpSource() {
     // Our popular manga are just our library of manga
     override fun popularMangaParse(response: Response): MangasPage {
         val result = try {
-            gson.fromJson<JsonObject>(response.body!!.string())
-        } catch (e: JsonSyntaxException) {
+            json.decodeFromString<JsonObject>(response.body!!.string())
+        } catch (e: Exception) {
             apiCookies = ""
             throw Exception("Login Likely Failed. Try Refreshing.")
         }
-        val mangas = result["titles"].asJsonArray
+        val mangas = result["titles"]!!.jsonArray
         return MangasPage(
-            mangas.asJsonArray.map {
+            mangas.jsonArray.map {
                 SManga.create().apply {
-                    url = "/book/" + it["id"].asString
-                    title = it["display_name"].asString
-                    thumbnail_url = baseUrl + it["cover_url"].asString
+                    url = "/book/" + it.jsonObject["id"]!!.jsonPrimitive.content
+                    title = it.jsonObject["display_name"]!!.jsonPrimitive.content
+                    thumbnail_url = baseUrl + it.jsonObject["cover_url"]!!.jsonPrimitive.content
                 }
             },
             false
@@ -119,15 +122,15 @@ class Mango : ConfigurableSource, HttpSource() {
     // This will just return the same thing as the main library endpoint
     override fun mangaDetailsParse(response: Response): SManga {
         val result = try {
-            gson.fromJson<JsonObject>(response.body!!.string())
-        } catch (e: JsonSyntaxException) {
+            json.decodeFromString<JsonObject>(response.body!!.string())
+        } catch (e: Exception) {
             apiCookies = ""
             throw Exception("Login Likely Failed. Try Refreshing.")
         }
         return SManga.create().apply {
-            url = "/book/" + result["id"].asString
-            title = result["display_name"].asString
-            thumbnail_url = baseUrl + result["cover_url"].asString
+            url = "/book/" + result.jsonObject["id"]!!.jsonPrimitive.content
+            title = result.jsonObject["display_name"]!!.jsonPrimitive.content
+            thumbnail_url = baseUrl + result.jsonObject["cover_url"]!!.jsonPrimitive.content
         }
     }
 
@@ -137,8 +140,8 @@ class Mango : ConfigurableSource, HttpSource() {
     // The chapter url will contain how many pages the chapter contains for our page list endpoint
     override fun chapterListParse(response: Response): List<SChapter> {
         val result = try {
-            gson.fromJson<JsonObject>(response.body!!.string())
-        } catch (e: JsonSyntaxException) {
+            json.decodeFromString<JsonObject>(response.body!!.string())
+        } catch (e: Exception) {
             apiCookies = ""
             throw Exception("Login Likely Failed. Try Refreshing.")
         }
@@ -148,17 +151,17 @@ class Mango : ConfigurableSource, HttpSource() {
     // Helper function for listing chapters and chapters in nested titles recursively
     private fun listChapters(titleObj: JsonObject): List<SChapter> {
         val chapters = mutableListOf<SChapter>()
-        val topChapters = titleObj.getAsJsonArray("entries")?.map { obj ->
+        val topChapters = titleObj["entries"]?.jsonArray?.map { obj ->
             SChapter.create().apply {
-                name = obj["display_name"].asString
+                name = obj.jsonObject["display_name"]!!.jsonPrimitive.content
                 url =
-                    "/page/${obj["title_id"].asString}/${obj["id"].asString}/${obj["pages"].asString}/"
-                date_upload = 1000L * obj["mtime"].asLong
+                    "/page/${obj.jsonObject["title_id"]!!.jsonPrimitive.content}/${obj.jsonObject["id"]!!.jsonPrimitive.content}/${obj.jsonObject["pages"]!!.jsonPrimitive.content}/"
+                date_upload = 1000L * obj.jsonObject["mtime"]!!.jsonPrimitive.long
             }
         }
-        val subChapters = titleObj.getAsJsonArray("titles")?.map { obj ->
-            val name = obj["display_name"].asString
-            listChapters(obj.asJsonObject).map { chp ->
+        val subChapters = titleObj["titles"]?.jsonArray?.map { obj ->
+            val name = obj.jsonObject["display_name"]!!.jsonPrimitive.content
+            listChapters(obj.jsonObject).map { chp ->
                 chp.name = "$name / ${chp.name}"
                 chp
             }
@@ -200,11 +203,11 @@ class Mango : ConfigurableSource, HttpSource() {
     override val lang = "en"
     override val supportsLatest = false
 
+    private val json: Json by injectLazy()
     override val baseUrl by lazy { getPrefBaseUrl() }
     private val port by lazy { getPrefPort() }
     private val username by lazy { getPrefUsername() }
     private val password by lazy { getPrefPassword() }
-    private val gson by lazy { Gson() }
     private var apiCookies: String = ""
 
     override fun headersBuilder(): Headers.Builder =
diff --git a/src/ca/fansubscat/build.gradle b/src/ca/fansubscat/build.gradle
index b6c338fae..62b432f62 100644
--- a/src/ca/fansubscat/build.gradle
+++ b/src/ca/fansubscat/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Fansubs.cat'
diff --git a/src/ca/fansubscat/src/eu/kanade/tachiyomi/extension/ca/fansubscat/FansubsCat.kt b/src/ca/fansubscat/src/eu/kanade/tachiyomi/extension/ca/fansubscat/FansubsCat.kt
index 7cec89e66..658580c9a 100644
--- a/src/ca/fansubscat/src/eu/kanade/tachiyomi/extension/ca/fansubscat/FansubsCat.kt
+++ b/src/ca/fansubscat/src/eu/kanade/tachiyomi/extension/ca/fansubscat/FansubsCat.kt
@@ -1,13 +1,5 @@
 package eu.kanade.tachiyomi.extension.ca.fansubscat
 
-import com.github.salomonbrys.kotson.float
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.get
-import com.github.salomonbrys.kotson.long
-import com.github.salomonbrys.kotson.nullString
-import com.github.salomonbrys.kotson.string
-import com.google.gson.Gson
-import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.asObservableSuccess
@@ -17,12 +9,22 @@ import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.contentOrNull
+import kotlinx.serialization.json.float
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import kotlinx.serialization.json.long
 import okhttp3.Headers
 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
 import rx.Observable
+import uy.kohesive.injekt.injectLazy
 
 class FansubsCat : HttpSource() {
 
@@ -39,22 +41,22 @@ class FansubsCat : HttpSource() {
 
     override val client: OkHttpClient = network.client
 
-    private val gson = Gson()
+    private val json: Json by injectLazy()
 
     private val apiBaseUrl = "https://api.fansubs.cat"
 
     private fun parseMangaFromJson(response: Response): MangasPage {
-        val jsonObject = gson.fromJson<JsonObject>(response.body!!.string())
+        val jsonObject = json.decodeFromString<JsonObject>(response.body!!.string())
 
-        val mangas = jsonObject["result"].asJsonArray.map { json ->
+        val mangas = jsonObject["result"]!!.jsonArray.map { json ->
             SManga.create().apply {
-                url = json["slug"].string
-                title = json["name"].string
-                thumbnail_url = json["thumbnail_url"].string
-                author = json["author"].nullString
-                description = json["synopsis"].nullString
-                status = json["status"].string.toStatus()
-                genre = json["genres"].nullString
+                url = json.jsonObject["slug"]!!.jsonPrimitive.content
+                title = json.jsonObject["name"]!!.jsonPrimitive.content
+                thumbnail_url = json.jsonObject["thumbnail_url"]!!.jsonPrimitive.content
+                author = json.jsonObject["author"]!!.jsonPrimitive.contentOrNull
+                description = json.jsonObject["synopsis"]!!.jsonPrimitive.contentOrNull
+                status = json.jsonObject["status"]!!.jsonPrimitive.content.toStatus()
+                genre = json.jsonObject["genres"]!!.jsonPrimitive.contentOrNull
             }
         }
 
@@ -62,24 +64,24 @@ class FansubsCat : HttpSource() {
     }
 
     private fun parseChapterListFromJson(response: Response): List<SChapter> {
-        val jsonObject = gson.fromJson<JsonObject>(response.body!!.string())
+        val jsonObject = json.decodeFromString<JsonObject>(response.body!!.string())
 
-        return jsonObject["result"].asJsonArray.map { json ->
+        return jsonObject["result"]!!.jsonArray.map { json ->
             SChapter.create().apply {
-                url = json["id"].string
-                name = json["title"].string
-                chapter_number = json["number"].float
-                scanlator = json["fansub"].string
-                date_upload = json["created"].long
+                url = json.jsonObject["id"]!!.jsonPrimitive.content
+                name = json.jsonObject["title"]!!.jsonPrimitive.content
+                chapter_number = json.jsonObject["number"]!!.jsonPrimitive.float
+                scanlator = json.jsonObject["fansub"]!!.jsonPrimitive.content
+                date_upload = json.jsonObject["created"]!!.jsonPrimitive.long
             }
         }
     }
 
     private fun parsePageListFromJson(response: Response): List<Page> {
-        val jsonObject = gson.fromJson<JsonObject>(response.body!!.string())
+        val jsonObject = json.decodeFromString<JsonObject>(response.body!!.string())
 
-        return jsonObject["result"].asJsonArray.mapIndexed { i, it ->
-            Page(i, it["url"].asString, it["url"].asString)
+        return jsonObject["result"]!!.jsonArray.mapIndexed { i, it ->
+            Page(i, it.jsonObject["url"]!!.jsonPrimitive.content, it.jsonObject["url"]!!.jsonPrimitive.content)
         }
     }
 
@@ -124,16 +126,17 @@ class FansubsCat : HttpSource() {
     }
 
     override fun mangaDetailsParse(response: Response): SManga {
-        val jsonObject = gson.fromJson<JsonObject>(response.body!!.string())
+        val jsonObject = json.decodeFromString<JsonObject>(response.body!!.string())
+        val resultObject = jsonObject.jsonObject["result"]!!.jsonObject
 
         return SManga.create().apply {
-            url = jsonObject["result"]["slug"].string
-            title = jsonObject["result"]["name"].string
-            thumbnail_url = jsonObject["result"]["thumbnail_url"].string
-            author = jsonObject["result"]["author"].nullString
-            description = jsonObject["result"]["synopsis"].nullString
-            status = jsonObject["result"]["status"].string.toStatus()
-            genre = jsonObject["result"]["genres"].nullString
+            url = resultObject["slug"]!!.jsonPrimitive.content
+            title = resultObject["name"]!!.jsonPrimitive.content
+            thumbnail_url = resultObject["thumbnail_url"]!!.jsonPrimitive.content
+            author = resultObject["author"]!!.jsonPrimitive.contentOrNull
+            description = resultObject["synopsis"]!!.jsonPrimitive.contentOrNull
+            status = resultObject["status"]!!.jsonPrimitive.content.toStatus()
+            genre = resultObject["genres"]!!.jsonPrimitive.contentOrNull
         }
     }
 
diff --git a/src/en/doujins/build.gradle b/src/en/doujins/build.gradle
index 423ceffde..b7b0d2ed2 100644
--- a/src/en/doujins/build.gradle
+++ b/src/en/doujins/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Doujins'
diff --git a/src/en/doujins/src/eu/kanade/tachiyomi/extension/en/doujins/Doujins.kt b/src/en/doujins/src/eu/kanade/tachiyomi/extension/en/doujins/Doujins.kt
index 5ae43cf43..007359086 100644
--- a/src/en/doujins/src/eu/kanade/tachiyomi/extension/en/doujins/Doujins.kt
+++ b/src/en/doujins/src/eu/kanade/tachiyomi/extension/en/doujins/Doujins.kt
@@ -1,11 +1,5 @@
 package eu.kanade.tachiyomi.extension.en.doujins
 
-import android.app.Application
-import android.content.SharedPreferences
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.get
-import com.google.gson.Gson
-import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.source.model.Filter
 import eu.kanade.tachiyomi.source.model.FilterList
@@ -15,11 +9,16 @@ import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.util.asJsoup
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.Request
 import okhttp3.Response
 import org.jsoup.nodes.Document
-import uy.kohesive.injekt.Injekt
-import uy.kohesive.injekt.api.get
+import uy.kohesive.injekt.injectLazy
 import java.text.ParseException
 import java.text.SimpleDateFormat
 import java.util.Calendar
@@ -37,16 +36,12 @@ class Doujins : HttpSource() {
 
     override val supportsLatest: Boolean = true
 
-    private val gson = Gson()
-
-    private val preferences: SharedPreferences by lazy {
-        Injekt.get<Application>().getSharedPreferences("source_$id", 0x0000)
-    }
+    private val json: Json by injectLazy()
 
     override fun chapterListParse(response: Response): List<SChapter> {
         return listOf(
             SChapter.create().apply {
-                var element = response.asJsoup()
+                val element = response.asJsoup()
                 name = "Chapter"
                 scanlator = element.select("div.folder-message:contains(Translated)").text().substringAfter("by:").trim()
                 setUrlWithoutDomain(response.request.url.toString())
@@ -68,14 +63,14 @@ class Doujins : HttpSource() {
 
     override fun latestUpdatesParse(response: Response): MangasPage {
         return MangasPage(
-            gson.fromJson<JsonObject>(response.body!!.string())["folders"].asJsonArray.map {
+            json.decodeFromString<JsonObject>(response.body!!.string())["folders"]!!.jsonArray.map {
                 SManga.create().apply {
-                    setUrlWithoutDomain(it["link"].asString)
-                    title = it["name"].asString
-                    artist = it["artistList"].asString
+                    setUrlWithoutDomain(it.jsonObject["link"]!!.jsonPrimitive.content)
+                    title = it.jsonObject["name"]!!.jsonPrimitive.content
+                    artist = it.jsonObject["artistList"]!!.jsonPrimitive.content
                     author = artist
-                    genre = it["tags"].asJsonArray.joinToString(", ") { it["tag"].asString }
-                    thumbnail_url = it["thumbnail2"].asString
+                    genre = it.jsonObject["tags"]!!.jsonArray.joinToString(", ") { it.jsonObject["tag"]!!.jsonPrimitive.content }
+                    thumbnail_url = it.jsonObject["thumbnail2"]!!.jsonPrimitive.content
                 }
             },
             true
diff --git a/src/en/madokami/build.gradle b/src/en/madokami/build.gradle
index 466d1b9e2..33995172a 100644
--- a/src/en/madokami/build.gradle
+++ b/src/en/madokami/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Madokami'
diff --git a/src/en/madokami/src/eu/kanade/tachiyomi/extension/en/madokami/Madokami.kt b/src/en/madokami/src/eu/kanade/tachiyomi/extension/en/madokami/Madokami.kt
index 2f2a6ad8c..0b6ad2930 100644
--- a/src/en/madokami/src/eu/kanade/tachiyomi/extension/en/madokami/Madokami.kt
+++ b/src/en/madokami/src/eu/kanade/tachiyomi/extension/en/madokami/Madokami.kt
@@ -3,9 +3,6 @@ package eu.kanade.tachiyomi.extension.en.madokami
 import android.app.Application
 import android.content.SharedPreferences
 import android.text.InputType
-import com.github.salomonbrys.kotson.fromJson
-import com.google.gson.Gson
-import com.google.gson.JsonArray
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.source.ConfigurableSource
 import eu.kanade.tachiyomi.source.model.FilterList
@@ -13,6 +10,10 @@ import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonArray
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.Credentials
 import okhttp3.HttpUrl
 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
@@ -23,6 +24,7 @@ import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
+import uy.kohesive.injekt.injectLazy
 import java.io.IOException
 import java.net.URLDecoder
 import java.net.URLEncoder
@@ -36,7 +38,7 @@ class Madokami : ConfigurableSource, ParsedHttpSource() {
     override val lang = "en"
     override val supportsLatest = false
 
-    private val gson = Gson()
+    private val json: Json by injectLazy()
 
     private val dateFormat = SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.ENGLISH)
 
@@ -154,7 +156,7 @@ class Madokami : ConfigurableSource, ParsedHttpSource() {
     override fun pageListParse(document: Document): List<Page> {
         val element = document.select("div#reader")
         val path = element.attr("data-path")
-        val files = gson.fromJson<JsonArray>(element.attr("data-files"))
+        val files = json.decodeFromString<JsonArray>(element.attr("data-files"))
         val pages = mutableListOf<Page>()
         for ((index, file) in files.withIndex()) {
             val url = HttpUrl.Builder()
@@ -162,7 +164,7 @@ class Madokami : ConfigurableSource, ParsedHttpSource() {
                 .host("manga.madokami.al")
                 .addPathSegments("reader/image")
                 .addEncodedQueryParameter("path", URLEncoder.encode(path, "UTF-8"))
-                .addEncodedQueryParameter("file", URLEncoder.encode(file.asString, "UTF-8"))
+                .addEncodedQueryParameter("file", URLEncoder.encode(file.jsonPrimitive.content, "UTF-8"))
                 .build()
                 .toUrl()
             pages.add(Page(index, url.toExternalForm(), url.toExternalForm()))
diff --git a/src/en/mangalinkz/build.gradle b/src/en/mangalinkz/build.gradle
index bd8a3eaa0..69d58c194 100644
--- a/src/en/mangalinkz/build.gradle
+++ b/src/en/mangalinkz/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Manga Linkz'
diff --git a/src/en/mangalinkz/src/eu/kanade/tachiyomi/extension/en/mangalinkz/MangaLinkz.kt b/src/en/mangalinkz/src/eu/kanade/tachiyomi/extension/en/mangalinkz/MangaLinkz.kt
index 205f36718..a020fb12e 100644
--- a/src/en/mangalinkz/src/eu/kanade/tachiyomi/extension/en/mangalinkz/MangaLinkz.kt
+++ b/src/en/mangalinkz/src/eu/kanade/tachiyomi/extension/en/mangalinkz/MangaLinkz.kt
@@ -1,20 +1,22 @@
 package eu.kanade.tachiyomi.extension.en.mangalinkz
 
 import android.util.Base64
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.string
-import com.google.gson.Gson
-import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.source.model.FilterList
 import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
+import uy.kohesive.injekt.injectLazy
 import java.text.SimpleDateFormat
 import java.util.Calendar
 import java.util.Locale
@@ -137,14 +139,14 @@ class MangaLinkz : ParsedHttpSource() {
 
     // Pages
 
-    private val gson by lazy { Gson() }
+    private val json: Json by injectLazy()
 
     override fun pageListParse(document: Document): List<Page> {
         val encoded = document.select("script:containsData(atob)").first().data()
             .substringAfter("atob(\"").substringBefore("\"")
         val decoded = Base64.decode(encoded, Base64.DEFAULT).toString(Charsets.UTF_8).removeSurrounding("[", "]")
 
-        return gson.fromJson<JsonObject>(decoded)["pages"].asJsonArray.mapIndexed { i, jsonElement -> Page(i, "", jsonElement.string) }
+        return json.decodeFromString<JsonObject>(decoded)["pages"]!!.jsonArray.mapIndexed { i, jsonElement -> Page(i, "", jsonElement.jsonPrimitive.content) }
     }
 
     override fun imageUrlParse(document: Document): String = throw UnsupportedOperationException("Not used")
diff --git a/src/en/multporn/build.gradle b/src/en/multporn/build.gradle
index 152b9c401..a5749cf42 100644
--- a/src/en/multporn/build.gradle
+++ b/src/en/multporn/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Multporn'
diff --git a/src/en/multporn/src/eu/kanade/tachiyomi/extension/en/multporn/Multporn.kt b/src/en/multporn/src/eu/kanade/tachiyomi/extension/en/multporn/Multporn.kt
index 1c3f328c7..24f07df48 100644
--- a/src/en/multporn/src/eu/kanade/tachiyomi/extension/en/multporn/Multporn.kt
+++ b/src/en/multporn/src/eu/kanade/tachiyomi/extension/en/multporn/Multporn.kt
@@ -1,9 +1,5 @@
 package eu.kanade.tachiyomi.extension.en.multporn
 
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.get
-import com.google.gson.Gson
-import com.google.gson.JsonArray
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.POST
 import eu.kanade.tachiyomi.network.asObservable
@@ -16,6 +12,11 @@ import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
 import eu.kanade.tachiyomi.util.asJsoup
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.FormBody
 import okhttp3.Headers
 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
@@ -27,6 +28,7 @@ import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
 import rx.Observable
 import rx.schedulers.Schedulers
+import uy.kohesive.injekt.injectLazy
 import java.util.Locale
 
 class Multporn : ParsedHttpSource() {
@@ -36,7 +38,7 @@ class Multporn : ParsedHttpSource() {
     override val baseUrl = "https://multporn.net"
     override val supportsLatest = true
 
-    private val gson = Gson()
+    private val json: Json by injectLazy()
 
     override fun headersBuilder(): Headers.Builder = Headers.Builder()
         .add("User-Agent", HEADER_USER_AGENT)
@@ -65,8 +67,8 @@ class Multporn : ParsedHttpSource() {
     override fun popularMangaRequest(page: Int) = buildPopularMangaRequest(page - 1)
 
     override fun popularMangaParse(response: Response): MangasPage {
-        val html = gson.fromJson<JsonArray>(response.body!!.string())
-            .last { it["command"].asString == "insert" }.asJsonObject["data"].asString
+        val html = json.decodeFromString<JsonArray>(response.body!!.string())
+            .last { it.jsonObject["command"]!!.jsonPrimitive.content == "insert" }.jsonObject["data"]!!.jsonPrimitive.content
 
         return super.popularMangaParse(
             response.newBuilder()
diff --git a/src/ru/henchan/build.gradle b/src/ru/henchan/build.gradle
index cf5c6db7d..bc8a51722 100644
--- a/src/ru/henchan/build.gradle
+++ b/src/ru/henchan/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Henchan'
diff --git a/src/ru/henchan/src/eu/kanade/tachiyomi/extension/ru/henchan/Henchan.kt b/src/ru/henchan/src/eu/kanade/tachiyomi/extension/ru/henchan/Henchan.kt
index 9b1e504b0..8d2e3d71b 100644
--- a/src/ru/henchan/src/eu/kanade/tachiyomi/extension/ru/henchan/Henchan.kt
+++ b/src/ru/henchan/src/eu/kanade/tachiyomi/extension/ru/henchan/Henchan.kt
@@ -1,12 +1,6 @@
 package eu.kanade.tachiyomi.extension.ru.henchan
 
 import android.annotation.SuppressLint
-import com.github.salomonbrys.kotson.array
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.string
-import com.google.gson.Gson
-import com.google.gson.JsonArray
-import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.lib.ratelimit.RateLimitInterceptor
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.asObservable
@@ -17,6 +11,12 @@ import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
 import eu.kanade.tachiyomi.util.asJsoup
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonArray
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.Headers
 import okhttp3.OkHttpClient
 import okhttp3.Request
@@ -24,6 +24,7 @@ import okhttp3.Response
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
 import rx.Observable
+import uy.kohesive.injekt.injectLazy
 import java.net.URL
 import java.text.SimpleDateFormat
 import java.util.Date
@@ -254,17 +255,17 @@ class Henchan : ParsedHttpSource() {
 
     override fun imageUrlParse(document: Document) = throw Exception("Not Used")
 
-    private val gson = Gson()
+    private val json: Json by injectLazy()
 
     private fun Document.parseJsonArray(): JsonArray {
         val imgScript = this.select("script:containsData(fullimg)").first().toString()
         val imgString = imgScript.substring(imgScript.indexOf('{'), imgScript.lastIndexOf('}') + 1).replace("&quot;", "\"")
-        return gson.fromJson<JsonObject>(imgString)["fullimg"].array
+        return json.decodeFromString<JsonObject>(imgString)["fullimg"]!!.jsonArray
     }
 
     override fun pageListParse(document: Document): List<Page> {
         return document.parseJsonArray().mapIndexed { index, imageUrl ->
-            Page(index, imageUrl = imageUrl.string.replace(".gif.webp", ".gif"))
+            Page(index, imageUrl = imageUrl.jsonPrimitive.content.replace(".gif.webp", ".gif"))
         }
     }
 
diff --git a/src/th/nekopost/build.gradle b/src/th/nekopost/build.gradle
index e54a00bfd..81bbb1ba9 100644
--- a/src/th/nekopost/build.gradle
+++ b/src/th/nekopost/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Nekopost'
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/Nekopost.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/Nekopost.kt
index 84fc41ef0..af12433dd 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/Nekopost.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/Nekopost.kt
@@ -1,9 +1,8 @@
 package eu.kanade.tachiyomi.extension.th.nekopost
 
-import com.google.gson.Gson
 import eu.kanade.tachiyomi.extension.th.nekopost.model.RawChapterInfo
 import eu.kanade.tachiyomi.extension.th.nekopost.model.RawProjectInfo
-import eu.kanade.tachiyomi.extension.th.nekopost.model.RawProjectNameList
+import eu.kanade.tachiyomi.extension.th.nekopost.model.RawProjectNameListItem
 import eu.kanade.tachiyomi.extension.th.nekopost.model.RawProjectSummaryList
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.asObservableSuccess
@@ -13,6 +12,8 @@ import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
 import okhttp3.Headers
 import okhttp3.OkHttpClient
 import okhttp3.Request
@@ -20,11 +21,12 @@ import okhttp3.Response
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
 import rx.Observable
+import uy.kohesive.injekt.injectLazy
 import java.text.SimpleDateFormat
 import java.util.Locale
 
 class Nekopost : ParsedHttpSource() {
-    private val gson: Gson = Gson()
+    private val json: Json by injectLazy()
     override val baseUrl: String = "https://www.nekopost.net/project"
 
     private val latestMangaEndpoint: String =
@@ -81,10 +83,10 @@ class Nekopost : ParsedHttpSource() {
             .map { response ->
                 val responseBody =
                     response.body ?: throw Error("Unable to fetch manga detail of ${manga.title}")
-                val projectInfo = gson.fromJson(responseBody.string(), RawProjectInfo::class.java)
+                val projectInfo: RawProjectInfo = json.decodeFromString(responseBody.string())
 
                 manga.apply {
-                    projectInfo.projectData.let {
+                    projectInfo.projectInfo.let {
                         url = it.npProjectId
                         title = it.npName
                         artist = it.artistName
@@ -95,7 +97,7 @@ class Nekopost : ParsedHttpSource() {
                     }
 
                     genre =
-                        projectInfo.projectCategoryUsed.map { it.npcName }.joinToString(", ")
+                        projectInfo.projectCategoryUsed.joinToString(", ") { it.npcName }
                 }
             }
     }
@@ -108,8 +110,7 @@ class Nekopost : ParsedHttpSource() {
                     val responseBody =
                         response.body
                             ?: throw Error("Unable to fetch manga detail of ${manga.title}")
-                    val projectInfo =
-                        gson.fromJson(responseBody.string(), RawProjectInfo::class.java)
+                    val projectInfo: RawProjectInfo = json.decodeFromString(responseBody.string())
 
                     projectInfo.projectChapterList.map { chapter ->
                         SChapter.create().apply {
@@ -137,8 +138,7 @@ class Nekopost : ParsedHttpSource() {
                 val responseBody =
                     response.body
                         ?: throw Error("Unable to fetch page list of chapter ${chapter.chapter_number}")
-                val chapterInfo =
-                    gson.fromJson(responseBody.string(), RawChapterInfo::class.java)
+                val chapterInfo: RawChapterInfo = json.decodeFromString(responseBody.string())
 
                 chapterInfo.pageItem.map { page ->
                     Page(
@@ -159,7 +159,7 @@ class Nekopost : ParsedHttpSource() {
 
     override fun popularMangaParse(response: Response): MangasPage {
         val responseBody = response.body ?: throw Error("Unable to fetch mangas")
-        val projectList = gson.fromJson(responseBody.string(), RawProjectSummaryList::class.java)
+        val projectList: RawProjectSummaryList = json.decodeFromString(responseBody.string())
 
         val mangaList: List<SManga> =
             projectList.listItem
@@ -200,8 +200,7 @@ class Nekopost : ParsedHttpSource() {
             .asObservableSuccess()
             .map { response ->
                 val responseBody = response.body ?: throw Error("Unable to fetch title list")
-                val projectList =
-                    gson.fromJson(responseBody.string(), RawProjectNameList::class.java)
+                val projectList: List<RawProjectNameListItem> = json.decodeFromString(responseBody.string())
 
                 val mangaList: List<SManga> = projectList.filter { project ->
                     Regex(
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawChapterInfo.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawChapterInfo.kt
index 28a1b7047..64f2b54dd 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawChapterInfo.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawChapterInfo.kt
@@ -1,16 +1,12 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
-import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawChapterInfo(
-    @SerializedName("chapterId")
     val chapterId: Int,
-    @SerializedName("chapterNo")
     val chapterNo: String,
-    @SerializedName("pageCount")
     val pageCount: Int,
-    @SerializedName("pageItem")
     val pageItem: List<RawPageItem>,
-    @SerializedName("projectId")
     val projectId: String
 )
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawPageItem.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawPageItem.kt
index 23e88f13c..101060818 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawPageItem.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawPageItem.kt
@@ -1,14 +1,11 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
-import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawPageItem(
-    @SerializedName("fileName")
     val fileName: String,
-    @SerializedName("height")
     val height: Int,
-    @SerializedName("pageNo")
     val pageNo: Int,
-    @SerializedName("width")
     val width: Int
 )
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectCategory.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectCategory.kt
index 32eb138fa..ad228f5bb 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectCategory.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectCategory.kt
@@ -1,10 +1,12 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
-import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawProjectCategory(
-    @SerializedName("npc_name")
+    @SerialName("npc_name")
     val npcName: String,
-    @SerializedName("npc_name_link")
+    @SerialName("npc_name_link")
     val npcNameLink: String
 )
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectChapter.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectChapter.kt
index c05951984..0f9825608 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectChapter.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectChapter.kt
@@ -1,7 +1,9 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
 import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawProjectChapter(
     @SerializedName("cu_displayname")
     val cuDisplayname: String,
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfo.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfo.kt
index 7dc4c393a..5649231e9 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfo.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfo.kt
@@ -1,14 +1,11 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
-import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawProjectInfo(
-    @SerializedName("code")
     val code: String,
-    @SerializedName("projectCategoryUsed")
     val projectCategoryUsed: List<RawProjectCategory>,
-    @SerializedName("projectChapterList")
     val projectChapterList: List<RawProjectChapter>,
-    @SerializedName("projectInfo")
-    val projectData: RawProjectInfoData
+    val projectInfo: RawProjectInfoData
 )
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfoData.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfoData.kt
index cd26f325b..55f19a8cf 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfoData.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectInfoData.kt
@@ -1,7 +1,9 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
 import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawProjectInfoData(
     @SerializedName("artist_name")
     val artistName: String,
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectNameList.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectNameList.kt
deleted file mode 100644
index 705547f9c..000000000
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectNameList.kt
+++ /dev/null
@@ -1,3 +0,0 @@
-package eu.kanade.tachiyomi.extension.th.nekopost.model
-
-class RawProjectNameList : ArrayList<RawProjectNameListItem>()
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectNameListItem.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectNameListItem.kt
index 773dd01bc..65e00a82a 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectNameListItem.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectNameListItem.kt
@@ -1,18 +1,20 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
-import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawProjectNameListItem(
-    @SerializedName("np_name")
+    @SerialName("np_name")
     val npName: String,
-    @SerializedName("np_name_link")
+    @SerialName("np_name_link")
     val npNameLink: String,
-    @SerializedName("np_no_chapter")
+    @SerialName("np_no_chapter")
     val npNoChapter: String,
-    @SerializedName("np_project_id")
+    @SerialName("np_project_id")
     val npProjectId: String,
-    @SerializedName("np_status")
+    @SerialName("np_status")
     val npStatus: String,
-    @SerializedName("np_type")
+    @SerialName("np_type")
     val npType: String
 )
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummary.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummary.kt
index a297e65bb..d69feaa88 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummary.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummary.kt
@@ -1,28 +1,30 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
-import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawProjectSummary(
-    @SerializedName("nc_chapter_cover")
+    @SerialName("nc_chapter_cover")
     val ncChapterCover: String,
-    @SerializedName("nc_chapter_id")
+    @SerialName("nc_chapter_id")
     val ncChapterId: String,
-    @SerializedName("nc_chapter_name")
+    @SerialName("nc_chapter_name")
     val ncChapterName: String,
-    @SerializedName("nc_chapter_no")
+    @SerialName("nc_chapter_no")
     val ncChapterNo: String,
-    @SerializedName("nc_created_date")
+    @SerialName("nc_created_date")
     val ncCreatedDate: String,
-    @SerializedName("nc_provider")
+    @SerialName("nc_provider")
     val ncProvider: String,
-    @SerializedName("no_new_chapter")
+    @SerialName("no_new_chapter")
     val noNewChapter: String,
-    @SerializedName("np_group_dir")
+    @SerialName("np_group_dir")
     val npGroupDir: String,
-    @SerializedName("np_name")
+    @SerialName("np_name")
     val npName: String,
-    @SerializedName("np_name_link")
+    @SerialName("np_name_link")
     val npNameLink: String,
-    @SerializedName("np_project_id")
+    @SerialName("np_project_id")
     val npProjectId: String
 )
diff --git a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummaryList.kt b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummaryList.kt
index 9348714fc..eb4d58d4f 100644
--- a/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummaryList.kt
+++ b/src/th/nekopost/src/eu/kanade/tachiyomi/extension/th/nekopost/model/RawProjectSummaryList.kt
@@ -1,10 +1,9 @@
 package eu.kanade.tachiyomi.extension.th.nekopost.model
 
-import com.google.gson.annotations.SerializedName
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class RawProjectSummaryList(
-    @SerializedName("code")
     val code: String,
-    @SerializedName("listItem")
     val listItem: List<RawProjectSummary>?
 )
diff --git a/src/zh/comico/build.gradle b/src/zh/comico/build.gradle
index 9d4318756..b401d6e4d 100644
--- a/src/zh/comico/build.gradle
+++ b/src/zh/comico/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Comico'
diff --git a/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/Comico.kt b/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/Comico.kt
index 381d0f0d9..58d117cf2 100644
--- a/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/Comico.kt
+++ b/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/Comico.kt
@@ -1,10 +1,5 @@
 package eu.kanade.tachiyomi.extension.zh.comico
 
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.get
-import com.google.gson.Gson
-import com.google.gson.JsonElement
-import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.POST
 import eu.kanade.tachiyomi.source.model.FilterList
@@ -12,12 +7,19 @@ import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.FormBody
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
+import uy.kohesive.injekt.injectLazy
 import java.text.SimpleDateFormat
 import java.util.Locale
 
@@ -33,7 +35,7 @@ abstract class Comico(
 
     override val client: OkHttpClient = network.cloudflareClient
 
-    val gson = Gson()
+    val json: Json by injectLazy()
 
     // Popular
 
@@ -122,12 +124,12 @@ abstract class Comico(
         return POST("$baseUrl/api/getArticleList.nhn", chapterListHeaders, body)
     }
 
-    fun chapterFromJson(jsonElement: JsonElement): SChapter {
+    fun chapterFromJson(jsonObject: JsonObject): SChapter {
         val chapter = SChapter.create()
 
-        chapter.name = jsonElement["subtitle"].asString
-        chapter.setUrlWithoutDomain(jsonElement["articleDetailUrl"].asString)
-        chapter.date_upload = parseDate(jsonElement["date"].asString)
+        chapter.name = jsonObject["subtitle"]!!.jsonPrimitive.content
+        chapter.setUrlWithoutDomain(jsonObject["articleDetailUrl"]!!.jsonPrimitive.content)
+        chapter.date_upload = parseDate(jsonObject["date"]!!.jsonPrimitive.content)
 
         return chapter
     }
@@ -135,9 +137,14 @@ abstract class Comico(
     override fun chapterListParse(response: Response): List<SChapter> {
         val chapters = mutableListOf<SChapter>()
 
-        gson.fromJson<JsonObject>(response.body!!.string())["result"]["list"].asJsonArray.forEach {
-            if (it["freeFlg"].asString == "Y") chapters.add(chapterFromJson(it))
-        }
+        json.decodeFromString<JsonObject>(response.body!!.string())["result"]!!
+            .jsonObject["list"]!!
+            .jsonArray
+            .forEach {
+                if (it.jsonObject["freeFlg"]!!.jsonPrimitive.content == "Y") {
+                    chapters.add(chapterFromJson(it.jsonObject))
+                }
+            }
 
         return chapters.reversed()
     }
diff --git a/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/ComicoFactory.kt b/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/ComicoFactory.kt
index f3716777f..61200d0d4 100644
--- a/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/ComicoFactory.kt
+++ b/src/zh/comico/src/eu/kanade/tachiyomi/extension/zh/comico/ComicoFactory.kt
@@ -1,8 +1,5 @@
 package eu.kanade.tachiyomi.extension.zh.comico
 
-import com.github.salomonbrys.kotson.fromJson
-import com.github.salomonbrys.kotson.get
-import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.network.POST
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.source.SourceFactory
@@ -10,6 +7,11 @@ import eu.kanade.tachiyomi.source.model.MangasPage
 import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.FormBody
 import okhttp3.Request
 import okhttp3.Response
@@ -36,21 +38,24 @@ class ComicoChallenge : Comico("Comico Challenge", "/challenge", true) {
         val mangas = mutableListOf<SManga>()
         val body = response.body!!.string()
 
-        gson.fromJson<JsonObject>(body)["result"]["list"].asJsonArray.forEach {
-            val manga = SManga.create()
+        json.decodeFromString<JsonObject>(body)["result"]!!
+            .jsonObject["list"]!!
+            .jsonArray
+            .forEach {
+                val manga = SManga.create()
 
-            manga.thumbnail_url = it["img_url"].asString
-            manga.title = it["article_title"].asString
-            manga.author = it["author"].asString
-            manga.description = it["description"].asString
-            manga.url = it["article_url"].asString.substringAfter(urlModifier)
-            manga.status = if (it["is_end"].asString == "false") SManga.ONGOING else SManga.COMPLETED
+                manga.thumbnail_url = it.jsonObject["img_url"]!!.jsonPrimitive.content
+                manga.title = it.jsonObject["article_title"]!!.jsonPrimitive.content
+                manga.author = it.jsonObject["author"]!!.jsonPrimitive.content
+                manga.description = it.jsonObject["description"]!!.jsonPrimitive.content
+                manga.url = it.jsonObject["article_url"]!!.jsonPrimitive.content.substringAfter(urlModifier)
+                manga.status = if (it.jsonObject["is_end"]!!.jsonPrimitive.content == "false") SManga.ONGOING else SManga.COMPLETED
 
-            mangas.add(manga)
-        }
+                mangas.add(manga)
+            }
 
-        val lastPage = gson.fromJson<JsonObject>(body)["result"]["totalPageCnt"].asString
-        val currentPage = gson.fromJson<JsonObject>(body)["result"]["currentPageNo"].asString
+        val lastPage = json.decodeFromString<JsonObject>(body)["result"]!!.jsonObject["totalPageCnt"]!!.jsonPrimitive.content
+        val currentPage = json.decodeFromString<JsonObject>(body)["result"]!!.jsonObject["currentPageNo"]!!.jsonPrimitive.content
 
         return MangasPage(mangas, currentPage < lastPage)
     }
@@ -82,8 +87,12 @@ class ComicoChallenge : Comico("Comico Challenge", "/challenge", true) {
     override fun chapterListParse(response: Response): List<SChapter> {
         val chapters = mutableListOf<SChapter>()
 
-        gson.fromJson<JsonObject>(response.body!!.string())["result"]["list"].asJsonArray
-            .forEach { chapters.add(chapterFromJson(it)) }
+        json.decodeFromString<JsonObject>(response.body!!.string())["result"]!!
+            .jsonObject["list"]!!
+            .jsonArray
+            .forEach {
+                chapters.add(chapterFromJson(it.jsonObject))
+            }
 
         return chapters.reversed()
     }
diff --git a/src/zh/manhuagui/build.gradle b/src/zh/manhuagui/build.gradle
index 17539c914..168c85abd 100644
--- a/src/zh/manhuagui/build.gradle
+++ b/src/zh/manhuagui/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'ManHuaGui'
diff --git a/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Comic.kt b/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Comic.kt
index 63718c67f..7fc186471 100644
--- a/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Comic.kt
+++ b/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Comic.kt
@@ -1,5 +1,8 @@
 package eu.kanade.tachiyomi.extension.zh.manhuagui
 
+import kotlinx.serialization.Serializable
+
+@Serializable
 data class Comic(
     val bid: Int? = 0,
     val block_cc: String? = "",
diff --git a/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Manhuagui.kt b/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Manhuagui.kt
index 8ceb1ea04..58523bce2 100644
--- a/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Manhuagui.kt
+++ b/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Manhuagui.kt
@@ -2,7 +2,6 @@ package eu.kanade.tachiyomi.extension.zh.manhuagui
 
 import android.app.Application
 import android.content.SharedPreferences
-import com.google.gson.Gson
 import com.squareup.duktape.Duktape
 import eu.kanade.tachiyomi.lib.ratelimit.SpecificHostRateLimitInterceptor
 import eu.kanade.tachiyomi.network.GET
@@ -22,6 +21,8 @@ import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
 import okhttp3.Call
 import okhttp3.Callback
 import okhttp3.Headers
@@ -37,6 +38,7 @@ import org.jsoup.nodes.Element
 import rx.Observable
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
+import uy.kohesive.injekt.injectLazy
 import java.io.IOException
 import java.text.SimpleDateFormat
 import java.util.Locale
@@ -65,7 +67,7 @@ class Manhuagui : ConfigurableSource, ParsedHttpSource() {
 
     private val imageServer = arrayOf("https://i.hamreus.com", "https://cf.hamreus.com")
     private val mobileWebsiteUrl = "https://m.$baseHost"
-    private val gson = Gson()
+    private val json: Json by injectLazy()
     private val baseHttpUrl: HttpUrl = baseUrl.toHttpUrlOrNull()!!
 
     // Add rate limit to fix manga thumbnail load failure
@@ -388,7 +390,7 @@ class Manhuagui : ConfigurableSource, ParsedHttpSource() {
         }
 
         val imgJsonStr = re2.find(imgDecode)?.groups?.get(0)?.value
-        val imageJson: Comic = gson.fromJson(imgJsonStr, Comic::class.java)
+        val imageJson: Comic = json.decodeFromString(imgJsonStr!!)
 
         return imageJson.files!!.mapIndexed { i, imgStr ->
             val imgurl = "${imageServer[0]}${imageJson.path}$imgStr?cid=${imageJson.cid}&md5=${imageJson.sl?.md5}"
diff --git a/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Sl.kt b/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Sl.kt
index 60c67d5f8..a3237003d 100644
--- a/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Sl.kt
+++ b/src/zh/manhuagui/src/eu/kanade/tachiyomi/extension/zh/manhuagui/Sl.kt
@@ -1,5 +1,8 @@
 package eu.kanade.tachiyomi.extension.zh.manhuagui
 
+import kotlinx.serialization.Serializable
+
+@Serializable
 data class Sl(
     val md5: String? = ""
 )
diff --git a/src/zh/tohomh123/build.gradle b/src/zh/tohomh123/build.gradle
index c4f147202..87990798f 100644
--- a/src/zh/tohomh123/build.gradle
+++ b/src/zh/tohomh123/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'Tohomh123'
diff --git a/src/zh/tohomh123/src/eu/kanade/tachiyomi/extension/zh/tohomh123/Tohomh.kt b/src/zh/tohomh123/src/eu/kanade/tachiyomi/extension/zh/tohomh123/Tohomh.kt
index 3334b622b..6171c82ca 100644
--- a/src/zh/tohomh123/src/eu/kanade/tachiyomi/extension/zh/tohomh123/Tohomh.kt
+++ b/src/zh/tohomh123/src/eu/kanade/tachiyomi/extension/zh/tohomh123/Tohomh.kt
@@ -1,8 +1,5 @@
 package eu.kanade.tachiyomi.extension.zh.tohomh123
 
-import com.github.salomonbrys.kotson.fromJson
-import com.google.gson.Gson
-import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.source.model.FilterList
 import eu.kanade.tachiyomi.source.model.Page
@@ -10,11 +7,16 @@ import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
 import eu.kanade.tachiyomi.util.asJsoup
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonPrimitive
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
+import uy.kohesive.injekt.injectLazy
 import java.text.SimpleDateFormat
 import java.util.Locale
 
@@ -142,10 +144,10 @@ class Tohomh : ParsedHttpSource() {
         return pages
     }
 
-    private val gson = Gson()
+    private val json: Json by injectLazy()
 
     override fun imageUrlParse(response: Response): String {
-        return gson.fromJson<JsonObject>(response.body!!.string())["Code"].asString
+        return json.decodeFromString<JsonObject>(response.body!!.string())["Code"]!!.jsonPrimitive.content
     }
 
     override fun imageUrlParse(document: Document): String = throw UnsupportedOperationException("Not used")
diff --git a/src/zh/wuqimanga/build.gradle b/src/zh/wuqimanga/build.gradle
index 6aae533d3..6ff89436b 100644
--- a/src/zh/wuqimanga/build.gradle
+++ b/src/zh/wuqimanga/build.gradle
@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 
 ext {
     extName = 'WuqiManga'
diff --git a/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/Comic.kt b/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/Comic.kt
index 688f1884a..dcb957081 100644
--- a/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/Comic.kt
+++ b/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/Comic.kt
@@ -1,6 +1,8 @@
 package eu.kanade.tachiyomi.extension.zh.wuqimanga
 
-class Comic {
+import kotlinx.serialization.Serializable
 
+@Serializable
+class Comic {
     val fs: List<String?>? = listOf()
 }
diff --git a/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/WuqiManga.kt b/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/WuqiManga.kt
index 1f988d401..0b47c99f3 100644
--- a/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/WuqiManga.kt
+++ b/src/zh/wuqimanga/src/eu/kanade/tachiyomi/extension/zh/wuqimanga/WuqiManga.kt
@@ -1,6 +1,5 @@
 package eu.kanade.tachiyomi.extension.zh.wuqimanga
 
-import com.google.gson.Gson
 import com.squareup.duktape.Duktape
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.source.model.FilterList
@@ -9,11 +8,14 @@ import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
 import eu.kanade.tachiyomi.util.asJsoup
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
 import okhttp3.Headers
 import okhttp3.Request
 import okhttp3.Response
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
+import uy.kohesive.injekt.injectLazy
 
 class WuqiManga : ParsedHttpSource() {
 
@@ -137,7 +139,7 @@ class WuqiManga : ParsedHttpSource() {
         return chapters
     }
 
-    private val gson = Gson()
+    private val json: Json by injectLazy()
 
     override fun pageListParse(document: Document): List<Page> {
         val html = document.html()
@@ -147,7 +149,7 @@ class WuqiManga : ParsedHttpSource() {
         }
         val re2 = Regex("""\{.*\}""")
         val imgJsonStr = re2.find(result)?.groups?.get(0)?.value
-        val imageJson: Comic = gson.fromJson(imgJsonStr, Comic::class.java)
+        val imageJson: Comic = json.decodeFromString(imgJsonStr!!)
 
         return imageJson.fs!!.mapIndexed { i, imgStr ->
             val imgurl = "$imageServer$imgStr"