diff --git a/src/en/mangabtt/AndroidManifest.xml b/src/en/mangabtt/AndroidManifest.xml
new file mode 100644
index 000000000..8072ee00d
--- /dev/null
+++ b/src/en/mangabtt/AndroidManifest.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest />
diff --git a/src/en/mangabtt/build.gradle b/src/en/mangabtt/build.gradle
new file mode 100644
index 000000000..8f7233eb9
--- /dev/null
+++ b/src/en/mangabtt/build.gradle
@@ -0,0 +1,8 @@
+ext {
+    extName = 'MangaBTT'
+    extClass = '.MangaBTT'
+    extVersionCode = 1
+    isNsfw = true
+}
+
+apply from: "$rootDir/common.gradle"
diff --git a/src/en/mangabtt/res/mipmap-hdpi/ic_launcher.png b/src/en/mangabtt/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 000000000..fe9b345a3
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diff --git a/src/en/mangabtt/res/mipmap-mdpi/ic_launcher.png b/src/en/mangabtt/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 000000000..70fc06d95
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diff --git a/src/en/mangabtt/res/mipmap-xhdpi/ic_launcher.png b/src/en/mangabtt/res/mipmap-xhdpi/ic_launcher.png
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index 000000000..defd761e3
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diff --git a/src/en/mangabtt/res/mipmap-xxhdpi/ic_launcher.png b/src/en/mangabtt/res/mipmap-xxhdpi/ic_launcher.png
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index 000000000..64e0b45e2
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diff --git a/src/en/mangabtt/res/mipmap-xxxhdpi/ic_launcher.png b/src/en/mangabtt/res/mipmap-xxxhdpi/ic_launcher.png
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diff --git a/src/en/mangabtt/src/eu/kanade/tachiyomi/extension/en/mangabtt/MangaBTT.kt b/src/en/mangabtt/src/eu/kanade/tachiyomi/extension/en/mangabtt/MangaBTT.kt
new file mode 100644
index 000000000..cf3ec31b1
--- /dev/null
+++ b/src/en/mangabtt/src/eu/kanade/tachiyomi/extension/en/mangabtt/MangaBTT.kt
@@ -0,0 +1,263 @@
+package eu.kanade.tachiyomi.extension.en.mangabtt
+
+import eu.kanade.tachiyomi.network.GET
+import eu.kanade.tachiyomi.network.POST
+import eu.kanade.tachiyomi.network.interceptor.rateLimit
+import eu.kanade.tachiyomi.source.model.Filter
+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 okhttp3.FormBody
+import okhttp3.HttpUrl.Companion.toHttpUrl
+import okhttp3.Request
+import org.jsoup.nodes.Document
+import org.jsoup.nodes.Element
+import java.util.Calendar
+
+class MangaBTT : ParsedHttpSource() {
+
+    override val name = "MangaBTT"
+
+    override val baseUrl = "https://mangabtt.com"
+
+    override val lang = "en"
+
+    override val supportsLatest = true
+
+    override val client by lazy {
+        network.cloudflareClient.newBuilder()
+            .rateLimit(2)
+            .build()
+    }
+
+    override fun headersBuilder() = super.headersBuilder()
+        .add("Referer", "$baseUrl/")
+
+    // ============================== Popular ===============================
+
+    override fun popularMangaRequest(page: Int): Request = searchMangaRequest(
+        page = page,
+        query = "",
+        filters = FilterList(
+            SortByFilter(default = 2),
+            StatusFilter(default = 1),
+            GenreFilter(default = 1),
+        ),
+    )
+
+    override fun popularMangaSelector(): String =
+        searchMangaSelector()
+
+    override fun popularMangaFromElement(element: Element): SManga =
+        searchMangaFromElement(element)
+
+    override fun popularMangaNextPageSelector(): String =
+        searchMangaNextPageSelector()
+
+    // =============================== Latest ===============================
+
+    override fun latestUpdatesRequest(page: Int): Request = searchMangaRequest(
+        page = page,
+        query = "",
+        filters = FilterList(
+            SortByFilter(default = 8),
+            StatusFilter(default = 1),
+            GenreFilter(default = 1),
+        ),
+    )
+
+    override fun latestUpdatesSelector(): String =
+        searchMangaSelector()
+
+    override fun latestUpdatesFromElement(element: Element): SManga =
+        searchMangaFromElement(element)
+
+    override fun latestUpdatesNextPageSelector(): String =
+        searchMangaNextPageSelector()
+
+    // =============================== Search ===============================
+
+    override fun searchMangaRequest(page: Int, query: String, filters: FilterList): Request {
+        val url = "$baseUrl/find-story".toHttpUrl().newBuilder().apply {
+            if (query.isNotBlank()) {
+                addQueryParameter("keyword", query)
+            } else {
+                val genre = filters.firstInstanceOrNull<GenreFilter>()?.selectedValue.orEmpty()
+                val status = filters.firstInstanceOrNull<StatusFilter>()?.selectedValue.orEmpty()
+                val sortBy = filters.firstInstanceOrNull<SortByFilter>()?.selectedValue.orEmpty()
+
+                addQueryParameter("status", status)
+                addQueryParameter("sort", sortBy)
+                if (genre.isNotBlank()) {
+                    addPathSegment(genre)
+                }
+            }
+
+            addQueryParameter("page", page.toString())
+        }
+
+        return GET(url.build(), headers)
+    }
+
+    override fun searchMangaSelector(): String = ".items > .row > .item"
+
+    override fun searchMangaFromElement(element: Element): SManga = SManga.create().apply {
+        thumbnail_url = element.selectFirst(".image img")?.imgAttr()
+        element.selectFirst("figcaption h3 a")!!.run {
+            title = text()
+            setUrlWithoutDomain(attr("abs:href"))
+        }
+    }
+
+    override fun searchMangaNextPageSelector(): String =
+        "ul.pagination > li.active + li:not(.disabled)"
+
+    // =============================== Filters ==============================
+
+    override fun getFilterList(): FilterList = FilterList(
+        Filter.Header("Ignored when using text search"),
+        Filter.Separator(),
+        GenreFilter(),
+        StatusFilter(),
+        SortByFilter(),
+    )
+
+    // =========================== Manga Details ============================
+
+    override fun mangaDetailsParse(document: Document): SManga = SManga.create().apply {
+        title = document.selectFirst("h1.title-detail")!!.text()
+        description = document.selectFirst(".detail-content p")?.text()
+            ?.substringAfter("comic site. The Summary is ")
+
+        document.selectFirst(".detail-info")?.run {
+            thumbnail_url = selectFirst("img")?.imgAttr()
+            status = selectFirst(".status p:not(.name)").parseStatus()
+            genre = select(".kind a").joinToString(", ") { it.text() }
+            author = selectFirst(".author p:not(.name)")?.text()?.takeUnless {
+                it.equals("updating", true)
+            }
+        }
+    }
+
+    private fun Element?.parseStatus(): Int = with(this?.text()) {
+        return when {
+            equals("ongoing", true) -> SManga.ONGOING
+            equals("Đang cập nhật", true) -> SManga.ONGOING
+            equals("completed", true) -> SManga.COMPLETED
+            equals("on-hold", true) -> SManga.ON_HIATUS
+            equals("canceled", true) -> SManga.CANCELLED
+            else -> SManga.UNKNOWN
+        }
+    }
+
+    // ============================== Chapters ==============================
+
+    override fun chapterListRequest(manga: SManga): Request {
+        val postHeaders = headersBuilder().apply {
+            add("Accept", "*/*")
+            add("Host", baseUrl.toHttpUrl().host)
+            add("Origin", baseUrl)
+            set("Referer", baseUrl + manga)
+            add("X-Requested-With", "XMLHttpRequest")
+        }.build()
+
+        val postBody = FormBody.Builder()
+            .add("StoryID", manga.url.substringAfterLast("-"))
+            .build()
+
+        return POST("$baseUrl/Story/ListChapterByStoryID", postHeaders, postBody)
+    }
+
+    override fun chapterListSelector() = "ul > li:not(.heading)"
+
+    override fun chapterFromElement(element: Element): SChapter = SChapter.create().apply {
+        element.selectFirst(".col-xs-4")?.also {
+            date_upload = it.text().parseRelativeDate()
+        }
+        element.selectFirst("a")!!.run {
+            name = text()
+            setUrlWithoutDomain(attr("abs:href"))
+        }
+    }
+
+    // From OppaiStream
+    private fun String.parseRelativeDate(): Long {
+        val now = Calendar.getInstance().apply {
+            set(Calendar.HOUR_OF_DAY, 0)
+            set(Calendar.MINUTE, 0)
+            set(Calendar.SECOND, 0)
+            set(Calendar.MILLISECOND, 0)
+        }
+
+        var parsedDate = 0L
+        val relativeDate = this.split(" ").firstOrNull()
+            ?.replace("one", "1")
+            ?.replace("a", "1")
+            ?.toIntOrNull()
+            ?: return 0L
+
+        when {
+            // parse: 30 seconds ago
+            "second" in this -> {
+                parsedDate = now.apply { add(Calendar.SECOND, -relativeDate) }.timeInMillis
+            }
+            // parses: "42 minutes ago"
+            "minute" in this -> {
+                parsedDate = now.apply { add(Calendar.MINUTE, -relativeDate) }.timeInMillis
+            }
+            // parses: "1 hour ago" and "2 hours ago"
+            "hour" in this -> {
+                parsedDate = now.apply { add(Calendar.HOUR, -relativeDate) }.timeInMillis
+            }
+            // parses: "2 days ago"
+            "day" in this -> {
+                parsedDate = now.apply { add(Calendar.DAY_OF_YEAR, -relativeDate) }.timeInMillis
+            }
+            // parses: "2 weeks ago"
+            "week" in this -> {
+                parsedDate = now.apply { add(Calendar.WEEK_OF_YEAR, -relativeDate) }.timeInMillis
+            }
+            // parses: "2 months ago"
+            "month" in this -> {
+                parsedDate = now.apply { add(Calendar.MONTH, -relativeDate) }.timeInMillis
+            }
+            // parse: "2 years ago"
+            "year" in this -> {
+                parsedDate = now.apply { add(Calendar.YEAR, -relativeDate) }.timeInMillis
+            }
+        }
+        return parsedDate
+    }
+
+    // =============================== Pages ================================
+
+    override fun pageListParse(document: Document): List<Page> {
+        return document.select(".reading-detail > .page-chapter").map { page ->
+            val img = page.selectFirst("img[data-index]")!!
+            val index = img.attr("data-index").toInt()
+            val url = img.imgAttr()
+            Page(index, imageUrl = url)
+        }.sortedBy { it.index }
+    }
+
+    override fun imageUrlParse(document: Document) = ""
+
+    override fun imageRequest(page: Page): Request {
+        val imgHeaders = headersBuilder().apply {
+            add("Accept", "image/avif,image/webp,*/*")
+            add("Host", page.imageUrl!!.toHttpUrl().host)
+        }.build()
+
+        return GET(page.imageUrl!!, imgHeaders)
+    }
+
+    // ============================= Utilities ==============================
+
+    private fun Element.imgAttr(): String = when {
+        hasAttr("data-lazy-src") -> attr("abs:data-lazy-src")
+        hasAttr("data-src") -> attr("abs:data-src")
+        else -> attr("abs:src")
+    }
+}
diff --git a/src/en/mangabtt/src/eu/kanade/tachiyomi/extension/en/mangabtt/MangaBTTFilters.kt b/src/en/mangabtt/src/eu/kanade/tachiyomi/extension/en/mangabtt/MangaBTTFilters.kt
new file mode 100644
index 000000000..fbf85082f
--- /dev/null
+++ b/src/en/mangabtt/src/eu/kanade/tachiyomi/extension/en/mangabtt/MangaBTTFilters.kt
@@ -0,0 +1,76 @@
+package eu.kanade.tachiyomi.extension.en.mangabtt
+
+import eu.kanade.tachiyomi.source.model.Filter
+
+data class FilterOption(val displayName: String, val value: String)
+
+inline fun <reified T> List<*>.firstInstanceOrNull() = firstOrNull { it is T } as? T
+
+open class EnhancedSelect(name: String, private val _values: List<FilterOption>, state: Int = 0) :
+    Filter.Select<String>(name, _values.map { it.displayName }.toTypedArray(), state) {
+
+    val selectedValue: String?
+        get() = _values.getOrNull(state)?.value
+}
+
+class SortByFilter(default: Int = 1) : EnhancedSelect(
+    "Sort By",
+    listOf(
+        FilterOption("Top day", "13"),
+        FilterOption("Top week", "12"),
+        FilterOption("Top month", "11"),
+        FilterOption("Top All", "10"),
+        FilterOption("Comment", "25"),
+        FilterOption("New Manga", "15"),
+        FilterOption("Chapter", "30"),
+        FilterOption("Latest Updates", "0"),
+    ),
+    default - 1,
+)
+
+class StatusFilter(default: Int = 1) : EnhancedSelect(
+    "Status",
+    listOf(
+        FilterOption("All", "-1"),
+        FilterOption("Completed", "2"),
+        FilterOption("Ongoing", "1"),
+    ),
+    default - 1,
+)
+
+class GenreFilter(default: Int = 1) : EnhancedSelect(
+    "Genre",
+    listOf(
+        FilterOption("All", ""),
+        FilterOption("Action", "action"),
+        FilterOption("ADVENTURE", "adventure"),
+        FilterOption("Comedy", "comedy"),
+        FilterOption("Cooking", "cooking"),
+        FilterOption("Drama", "drama"),
+        FilterOption("Fantasy", "fantasy"),
+        FilterOption("Historical", "historical"),
+        FilterOption("Horror", "horror"),
+        FilterOption("Isekai", "isekai"),
+        FilterOption("Josei", "josei"),
+        FilterOption("Manhua", "manhua"),
+        FilterOption("Manhwa", "manhwa"),
+        FilterOption("Martial Arts", "martial-arts"),
+        FilterOption("Mecha", "mecha"),
+        FilterOption("MYSTERY", "mystery"),
+        FilterOption("PSYCHOLOGICAL", "psychological"),
+        FilterOption("Romance", "romance"),
+        FilterOption("School Life", "school-life"),
+        FilterOption("Sci fi", "sci-fi"),
+        FilterOption("Seinen", "seinen"),
+        FilterOption("Shoujo", "shoujo"),
+        FilterOption("Shounen", "shounen"),
+        FilterOption("SLICE OF LIF", "slice-of-lif"),
+        FilterOption("Slice of Life", "slice-of-life"),
+        FilterOption("Sports", "sports"),
+        FilterOption("SUGGESTIVE", "suggestive"),
+        FilterOption("SUPERNATURAL", "supernatural"),
+        FilterOption("TRAGEDY", "tragedy"),
+        FilterOption("Webtoons", "webtoons"),
+    ),
+    default - 1,
+)