diff --git a/src/zh/yidan/AndroidManifest.xml b/src/zh/yidan/AndroidManifest.xml
new file mode 100644
index 000000000..30deb7f79
--- /dev/null
+++ b/src/zh/yidan/AndroidManifest.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="eu.kanade.tachiyomi.extension" />
diff --git a/src/zh/yidan/build.gradle b/src/zh/yidan/build.gradle
new file mode 100644
index 000000000..f4b77e699
--- /dev/null
+++ b/src/zh/yidan/build.gradle
@@ -0,0 +1,13 @@
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
+
+ext {
+    extName = 'Yidan Girl'
+    pkgNameSuffix = 'zh.yidan'
+    extClass = '.Yidan'
+    extVersionCode = 1
+    isNsfw = true
+}
+
+apply from: "$rootDir/common.gradle"
diff --git a/src/zh/yidan/res/mipmap-hdpi/ic_launcher.png b/src/zh/yidan/res/mipmap-hdpi/ic_launcher.png
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index 000000000..bb66c1d21
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diff --git a/src/zh/yidan/res/mipmap-mdpi/ic_launcher.png b/src/zh/yidan/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 000000000..f953246d9
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diff --git a/src/zh/yidan/res/mipmap-xhdpi/ic_launcher.png b/src/zh/yidan/res/mipmap-xhdpi/ic_launcher.png
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diff --git a/src/zh/yidan/res/mipmap-xxhdpi/ic_launcher.png b/src/zh/yidan/res/mipmap-xxhdpi/ic_launcher.png
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index 000000000..9f1a27be2
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diff --git a/src/zh/yidan/res/mipmap-xxxhdpi/ic_launcher.png b/src/zh/yidan/res/mipmap-xxxhdpi/ic_launcher.png
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diff --git a/src/zh/yidan/res/web_hi_res_512.png b/src/zh/yidan/res/web_hi_res_512.png
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diff --git a/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Dto.kt b/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Dto.kt
new file mode 100644
index 000000000..84d998610
--- /dev/null
+++ b/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Dto.kt
@@ -0,0 +1,62 @@
+package eu.kanade.tachiyomi.extension.zh.yidan
+
+import eu.kanade.tachiyomi.source.model.SChapter
+import eu.kanade.tachiyomi.source.model.SManga
+import kotlinx.serialization.Serializable
+import org.jsoup.nodes.Entities
+
+@Serializable
+class MangaDto(
+    private val title: String,
+    private val mhcate: String?,
+    private val cateids: String?,
+    private val author: String?,
+    private val summary: String?,
+    private val coverPic: String?,
+    private val id: Int,
+) {
+    fun toSManga() = SManga.create().apply {
+        url = id.toString()
+        title = this@MangaDto.title
+        author = this@MangaDto.author
+        description = summary?.trim()
+        genre = when {
+            cateids.isNullOrEmpty() -> null
+            else -> cateids.split(",").joinToString { GENRES[it.toInt()] }
+        }
+        status = when {
+            mhcate.isNullOrEmpty() -> SManga.ONGOING
+            "5" in mhcate.split(",") -> SManga.COMPLETED
+            else -> SManga.ONGOING
+        }
+        thumbnail_url = coverPic
+        initialized = true
+    }
+}
+
+@Serializable
+class ChapterDto(
+    private val createTime: Long,
+    private val mhid: String,
+    private val title: String,
+    private val jiNo: Int
+) {
+    fun toSChapter() = SChapter.create().apply {
+        url = "$mhid/$jiNo"
+        name = Entities.unescape(title)
+        date_upload = createTime * 1000L
+    }
+}
+
+@Serializable
+class PageListDto(private val pics: String) {
+    val images get() = pics.split(",")
+}
+
+@Serializable
+class ListingDto(val list: List<MangaDto>, private val total: String) {
+    val totalCount get() = total.toInt()
+}
+
+@Serializable
+class ResponseDto<T>(val data: T)
diff --git a/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Filters.kt b/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Filters.kt
new file mode 100644
index 000000000..b58bf6bd5
--- /dev/null
+++ b/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Filters.kt
@@ -0,0 +1,52 @@
+package eu.kanade.tachiyomi.extension.zh.yidan
+
+import eu.kanade.tachiyomi.source.model.Filter
+import eu.kanade.tachiyomi.source.model.FilterList
+import okhttp3.HttpUrl
+
+fun getFilterListInternal() = FilterList(ListingFilter(), GenreFilter())
+
+fun parseFilters(filters: FilterList, builder: HttpUrl.Builder) {
+    for (filter in filters) when (filter) {
+        is ListingFilter -> {
+            if (filter.state > 0)
+                builder.addEncodedQueryParameter("mhcate", LISTING_VALUES[filter.state].toString())
+        }
+        is GenreFilter -> {
+            if (filter.state > 0)
+                builder.addEncodedQueryParameter("cateid", String.format("%02d", filter.state))
+        }
+        else -> {}
+    }
+}
+
+class ListingFilter : Filter.Select<String>("分类", LISTINGS)
+
+val LISTINGS = arrayOf("全部", "排行榜", "新作", "完结漫", "分类0", "分类1", "分类3", "分类7")
+val LISTING_VALUES = arrayOf(0, 2, 4, 5, 0, 1, 3, 7)
+
+class GenreFilter : Filter.Select<String>("标签", GENRES)
+
+val GENRES = arrayOf(
+    "全部",
+    "短漫", // 01
+    "甜漫", // 02
+    "强强", // 03
+    "年下攻", // 04
+    "诱受", // 05
+    "骨科", // 06
+    "调教", // 07
+    "健气受", // 08
+    "ABO", // 09
+    "重生/重逢", // 10
+    "财阀", // 11
+    "校园", // 12
+    "女王受", // 13
+    "NP/SM", // 14
+    "韩国榜单", // 15
+    "高H", // 16
+    "架空", // 17
+    "娱乐圈", // 18
+    "办公室", // 19
+    "青梅竹马", // 20
+)
diff --git a/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Yidan.kt b/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Yidan.kt
new file mode 100644
index 000000000..5f2275767
--- /dev/null
+++ b/src/zh/yidan/src/eu/kanade/tachiyomi/extension/zh/yidan/Yidan.kt
@@ -0,0 +1,137 @@
+package eu.kanade.tachiyomi.extension.zh.yidan
+
+import android.app.Application
+import androidx.preference.ListPreference
+import androidx.preference.PreferenceScreen
+import eu.kanade.tachiyomi.network.GET
+import eu.kanade.tachiyomi.network.asObservableSuccess
+import eu.kanade.tachiyomi.source.ConfigurableSource
+import eu.kanade.tachiyomi.source.model.FilterList
+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 eu.kanade.tachiyomi.source.online.HttpSource
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromStream
+import okhttp3.Headers
+import okhttp3.HttpUrl.Companion.toHttpUrl
+import okhttp3.Request
+import okhttp3.Response
+import rx.Observable
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+import uy.kohesive.injekt.injectLazy
+
+class Yidan : HttpSource(), ConfigurableSource {
+    override val name get() = "一耽女孩"
+    override val lang get() = "zh"
+    override val supportsLatest get() = true
+
+    override val baseUrl: String
+
+    init {
+        val mirrors = MIRRORS
+        val index = Injekt.get<Application>().getSharedPreferences("source_$id", 0x0000)
+            .getString(MIRROR_PREF, "0")!!.toInt().coerceAtMost(mirrors.size - 1)
+        baseUrl = "https://" + mirrors[index]
+    }
+
+    override fun headersBuilder() = Headers.Builder()
+        .add("User-Agent", System.getProperty("http.agent")!!)
+
+    private val json: Json by injectLazy()
+
+    override fun popularMangaRequest(page: Int) =
+        GET("$baseUrl/prod-api/app-api/vv/mh-list/page?mhcate=2&pageSize=50&pageNo=$page", headers)
+
+    override fun popularMangaParse(response: Response): MangasPage {
+        val listing: ListingDto = response.parseAs()
+        val mangas = listing.list.map { it.toSManga() }
+        val hasNextPage = run {
+            val url = response.request.url
+            val pageSize = url.queryParameter("pageSize")!!.toInt()
+            val pageNumber = url.queryParameter("pageNo")!!.toInt()
+            pageSize * pageNumber < listing.totalCount
+        }
+        return MangasPage(mangas, hasNextPage)
+    }
+
+    override fun latestUpdatesRequest(page: Int) =
+        GET("$baseUrl/prod-api/app-api/vv/mh-list/page?mhcate=4&pageSize=50&pageNo=$page", headers)
+
+    override fun latestUpdatesParse(response: Response) = popularMangaParse(response)
+
+    override fun searchMangaRequest(page: Int, query: String, filters: FilterList): Request {
+        val url = "$baseUrl/prod-api/app-api/vv/mh-list/page".toHttpUrl().newBuilder()
+            .apply { if (query.isNotBlank()) addQueryParameter("word", query) }
+            .apply { parseFilters(filters, this) }
+            .addEncodedQueryParameter("pageSize", "50")
+            .addEncodedQueryParameter("pageNo", page.toString())
+            .build()
+        return Request.Builder().url(url).headers(headers).build()
+    }
+
+    override fun searchMangaParse(response: Response) = popularMangaParse(response)
+
+    // for WebView
+    override fun mangaDetailsRequest(manga: SManga) =
+        GET("$baseUrl/#/pages/detail/detail?id=${manga.url}")
+
+    override fun fetchMangaDetails(manga: SManga): Observable<SManga> {
+        val request = GET("$baseUrl/prod-api/app-api/vv/mh-list/get?id=${manga.url}", headers)
+        return client.newCall(request).asObservableSuccess().map { mangaDetailsParse(it) }
+    }
+
+    override fun mangaDetailsParse(response: Response) =
+        response.parseAs<MangaDto>().toSManga()
+
+    override fun chapterListRequest(manga: SManga) =
+        GET("$baseUrl/prod-api/app-api/vv/mh-episodes/list?mhid=${manga.url}", headers)
+
+    override fun chapterListParse(response: Response) =
+        response.parseAs<List<ChapterDto>>().map { it.toSChapter() }
+
+    // for WebView
+    override fun pageListRequest(chapter: SChapter): Request {
+        val (mangaId, chapterIndex) = chapter.url.split("/")
+        return GET("$baseUrl/#/pages/read/read?no=$chapterIndex&id=$mangaId")
+    }
+
+    override fun fetchPageList(chapter: SChapter): Observable<List<Page>> {
+        val (mangaId, chapterIndex) = chapter.url.split("/")
+        val url = "$baseUrl/prod-api/app-api/vv/mh-episodes/get?jiNo=$chapterIndex&mhid=$mangaId"
+        return client.newCall(GET(url, headers)).asObservableSuccess().map { pageListParse(it) }
+    }
+
+    override fun pageListParse(response: Response) =
+        response.parseAs<PageListDto>().images.mapIndexed { index, url ->
+            val imageUrl = if (url.startsWith("http")) url else baseUrl + url
+            Page(index, imageUrl = imageUrl)
+        }
+
+    override fun imageUrlParse(response: Response) = throw UnsupportedOperationException()
+
+    private inline fun <reified T> Response.parseAs(): T = use {
+        json.decodeFromStream<ResponseDto<T>>(body!!.byteStream()).data
+    }
+
+    override fun getFilterList() = getFilterListInternal()
+
+    override fun setupPreferenceScreen(screen: PreferenceScreen) {
+        ListPreference(screen.context).apply {
+            val mirrors = MIRRORS
+            key = MIRROR_PREF
+            title = "镜像网址（重启生效）"
+            summary = "%s"
+            entries = mirrors
+            entryValues = Array(mirrors.size, Int::toString)
+            setDefaultValue("0")
+        }.let(screen::addPreference)
+    }
+
+    companion object {
+        private const val MIRROR_PREF = "MIRROR"
+        private val MIRRORS get() = arrayOf("ydan.cc", "ydan.vip", "dans.cc")
+    }
+}