diff --git a/domain/build.gradle.kts b/domain/build.gradle.kts
index 012ff00dd3..6c31e4bfb9 100644
--- a/domain/build.gradle.kts
+++ b/domain/build.gradle.kts
@@ -7,12 +7,18 @@ plugins {
 kotlin {
     androidTarget()
     sourceSets {
-        val commonMain by getting {
+        commonMain {
             dependencies {
                 implementation(projects.source.api)
             }
         }
-        val androidMain by getting {
+        commonTest {
+            dependencies {
+                implementation(libs.bundles.test)
+                implementation(kotlinx.coroutines.test)
+            }
+        }
+        androidMain {
             dependencies {
             }
         }
@@ -21,4 +27,8 @@ kotlin {
 
 android {
     namespace = "yokai.domain"
+
+    defaultConfig {
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
 }
diff --git a/domain/src/commonTest/kotlin/yokai/domain/chapter/services/ChapterRecognitionTest.kt b/domain/src/commonTest/kotlin/yokai/domain/chapter/services/ChapterRecognitionTest.kt
new file mode 100644
index 0000000000..15155bfe84
--- /dev/null
+++ b/domain/src/commonTest/kotlin/yokai/domain/chapter/services/ChapterRecognitionTest.kt
@@ -0,0 +1,277 @@
+package yokai.domain.chapter.services
+
+import io.kotest.matchers.shouldBe
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.parallel.Execution
+import org.junit.jupiter.api.parallel.ExecutionMode
+
+@Execution(ExecutionMode.CONCURRENT)
+class ChapterRecognitionTest {
+
+    @Test
+    fun `Basic Ch prefix`() {
+        val mangaTitle = "Mokushiroku Alice"
+
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol.1 Ch.4: Misrepresentation", 4.0)
+    }
+
+    @Test
+    fun `Basic Ch prefix with space after period`() {
+        val mangaTitle = "Mokushiroku Alice"
+
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol. 1 Ch. 4: Misrepresentation", 4.0)
+    }
+
+    @Test
+    fun `Basic Ch prefix with decimal`() {
+        val mangaTitle = "Mokushiroku Alice"
+
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol.1 Ch.4.1: Misrepresentation", 4.1)
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol.1 Ch.4.4: Misrepresentation", 4.4)
+    }
+
+    @Test
+    fun `Basic Ch prefix with alpha postfix`() {
+        val mangaTitle = "Mokushiroku Alice"
+
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol.1 Ch.4.a: Misrepresentation", 4.1)
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol.1 Ch.4.b: Misrepresentation", 4.2)
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol.1 Ch.4.extra: Misrepresentation", 4.99)
+    }
+
+    @Test
+    fun `Name containing one number`() {
+        val mangaTitle = "Bleach"
+
+        assertChapter(mangaTitle, "Bleach 567 Down With Snowwhite", 567.0)
+    }
+
+    @Test
+    fun `Name containing one number and decimal`() {
+        val mangaTitle = "Bleach"
+
+        assertChapter(mangaTitle, "Bleach 567.1 Down With Snowwhite", 567.1)
+        assertChapter(mangaTitle, "Bleach 567.4 Down With Snowwhite", 567.4)
+    }
+
+    @Test
+    fun `Name containing one number and alpha`() {
+        val mangaTitle = "Bleach"
+
+        assertChapter(mangaTitle, "Bleach 567.a Down With Snowwhite", 567.1)
+        assertChapter(mangaTitle, "Bleach 567.b Down With Snowwhite", 567.2)
+        assertChapter(mangaTitle, "Bleach 567.extra Down With Snowwhite", 567.99)
+    }
+
+    @Test
+    fun `Chapter containing manga title and number`() {
+        val mangaTitle = "Solanin"
+
+        assertChapter(mangaTitle, "Solanin 028 Vol. 2", 28.0)
+    }
+
+    @Test
+    fun `Chapter containing manga title and number decimal`() {
+        val mangaTitle = "Solanin"
+
+        assertChapter(mangaTitle, "Solanin 028.1 Vol. 2", 28.1)
+        assertChapter(mangaTitle, "Solanin 028.4 Vol. 2", 28.4)
+    }
+
+    @Test
+    fun `Chapter containing manga title and number alpha`() {
+        val mangaTitle = "Solanin"
+
+        assertChapter(mangaTitle, "Solanin 028.a Vol. 2", 28.1)
+        assertChapter(mangaTitle, "Solanin 028.b Vol. 2", 28.2)
+        assertChapter(mangaTitle, "Solanin 028.extra Vol. 2", 28.99)
+    }
+
+    @Test
+    fun `Extreme case`() {
+        val mangaTitle = "Onepunch-Man"
+
+        assertChapter(mangaTitle, "Onepunch-Man Punch Ver002 028", 28.0)
+    }
+
+    @Test
+    fun `Extreme case with decimal`() {
+        val mangaTitle = "Onepunch-Man"
+
+        assertChapter(mangaTitle, "Onepunch-Man Punch Ver002 028.1", 28.1)
+        assertChapter(mangaTitle, "Onepunch-Man Punch Ver002 028.4", 28.4)
+    }
+
+    @Test
+    fun `Extreme case with alpha`() {
+        val mangaTitle = "Onepunch-Man"
+
+        assertChapter(mangaTitle, "Onepunch-Man Punch Ver002 028.a", 28.1)
+        assertChapter(mangaTitle, "Onepunch-Man Punch Ver002 028.b", 28.2)
+        assertChapter(mangaTitle, "Onepunch-Man Punch Ver002 028.extra", 28.99)
+    }
+
+    @Test
+    fun `Chapter containing dot v2`() {
+        val mangaTitle = "random"
+
+        assertChapter(mangaTitle, "Vol.1 Ch.5v.2: Alones", 5.0)
+    }
+
+    @Test
+    fun `Number in manga title`() {
+        val mangaTitle = "Ayame 14"
+
+        assertChapter(mangaTitle, "Ayame 14 1 - The summer of 14", 1.0)
+    }
+
+    @Test
+    fun `Space between ch x`() {
+        val mangaTitle = "Mokushiroku Alice"
+
+        assertChapter(mangaTitle, "Mokushiroku Alice Vol.1 Ch. 4: Misrepresentation", 4.0)
+    }
+
+    @Test
+    fun `Chapter title with ch substring`() {
+        val mangaTitle = "Ayame 14"
+
+        assertChapter(mangaTitle, "Vol.1 Ch.1: March 25 (First Day Cohabiting)", 1.0)
+    }
+
+    @Test
+    fun `Chapter containing multiple zeros`() {
+        val mangaTitle = "random"
+
+        assertChapter(mangaTitle, "Vol.001 Ch.003: Kaguya Doesn't Know Much", 3.0)
+    }
+
+    @Test
+    fun `Chapter with version before number`() {
+        val mangaTitle = "Onepunch-Man"
+
+        assertChapter(mangaTitle, "Onepunch-Man Punch Ver002 086 : Creeping Darkness [3]", 86.0)
+    }
+
+    @Test
+    fun `Version attached to chapter number`() {
+        val mangaTitle = "Ansatsu Kyoushitsu"
+
+        assertChapter(mangaTitle, "Ansatsu Kyoushitsu 011v002: Assembly Time", 11.0)
+    }
+
+    /**
+     * Case where the chapter title contains the chapter
+     * But wait it's not actual the chapter number.
+     */
+    @Test
+    fun `Number after manga title with chapter in chapter title case`() {
+        val mangaTitle = "Tokyo ESP"
+
+        assertChapter(mangaTitle, "Tokyo ESP 027: Part 002: Chapter 001", 027.0)
+    }
+
+    /**
+     * Case where the chapter title contains the unwanted tag
+     * But follow by chapter number.
+     */
+    @Test
+    fun `Number after unwanted tag`() {
+        val mangaTitle = "One-punch Man"
+
+        assertChapter(mangaTitle, "Mag Version 195.5", 195.5)
+    }
+
+    @Test
+    fun `Unparseable chapter`() {
+        val mangaTitle = "random"
+
+        assertChapter(mangaTitle, "Foo", -1.0)
+    }
+
+    @Test
+    fun `Chapter with time in title`() {
+        val mangaTitle = "random"
+
+        assertChapter(mangaTitle, "Fairy Tail 404: 00:00", 404.0)
+    }
+
+    @Test
+    fun `Chapter with alpha without dot`() {
+        val mangaTitle = "random"
+
+        assertChapter(mangaTitle, "Asu No Yoichi 19a", 19.1)
+    }
+
+    @Test
+    fun `Chapter title containing extra and vol`() {
+        val mangaTitle = "Fairy Tail"
+
+        assertChapter(mangaTitle, "Fairy Tail 404.extravol002", 404.99)
+        assertChapter(mangaTitle, "Fairy Tail 404 extravol002", 404.99)
+    }
+
+    @Test
+    fun `Chapter title containing omake (japanese extra) and vol`() {
+        val mangaTitle = "Fairy Tail"
+
+        assertChapter(mangaTitle, "Fairy Tail 404.omakevol002", 404.98)
+        assertChapter(mangaTitle, "Fairy Tail 404 omakevol002", 404.98)
+    }
+
+    @Test
+    fun `Chapter title containing special and vol`() {
+        val mangaTitle = "Fairy Tail"
+
+        assertChapter(mangaTitle, "Fairy Tail 404.specialvol002", 404.97)
+        assertChapter(mangaTitle, "Fairy Tail 404 specialvol002", 404.97)
+    }
+
+    @Test
+    fun `Chapter title containing commas`() {
+        val mangaTitle = "One Piece"
+
+        assertChapter(mangaTitle, "One Piece 300,a", 300.1)
+        assertChapter(mangaTitle, "One Piece Ch,123,extra", 123.99)
+        assertChapter(mangaTitle, "One Piece the sunny, goes swimming 024,005", 24.005)
+    }
+
+    @Test
+    fun `Chapter title containing hyphens`() {
+        val mangaTitle = "Solo Leveling"
+
+        assertChapter(mangaTitle, "ch 122-a", 122.1)
+        assertChapter(mangaTitle, "Solo Leveling Ch.123-extra", 123.99)
+        assertChapter(mangaTitle, "Solo Leveling, 024-005", 24.005)
+        assertChapter(mangaTitle, "Ch.191-200 Read Online", 191.200)
+    }
+
+    @Test
+    fun `Chapters containing season`() {
+        assertChapter("D.I.C.E", "D.I.C.E[Season 001] Ep. 007", 7.0)
+    }
+
+    @Test
+    fun `Chapters in format sx - chapter xx`() {
+        assertChapter("The Gamer", "S3 - Chapter 20", 20.0)
+    }
+
+    @Test
+    fun `Chapters ending with s`() {
+        assertChapter("One Outs", "One Outs 001", 1.0)
+    }
+
+    @Test
+    fun `Chapters containing ordinals`() {
+        val mangaTitle = "The Sister of the Woods with a Thousand Young"
+
+        assertChapter(mangaTitle, "The 1st Night", 1.0)
+        assertChapter(mangaTitle, "The 2nd Night", 2.0)
+        assertChapter(mangaTitle, "The 3rd Night", 3.0)
+        assertChapter(mangaTitle, "The 4th Night", 4.0)
+    }
+
+    private fun assertChapter(mangaTitle: String, name: String, expected: Double) {
+        ChapterRecognition.parseChapterNumber(mangaTitle, name) shouldBe expected
+    }
+}
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 291eb53d24..9867adf25e 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -45,6 +45,8 @@ injekt-core = { module = "com.github.inorichi.injekt:injekt-core", version = "65
 
 kermit = { module = "co.touchlab:kermit", version.ref = "kermit" }
 
+kotest-assertions = { module = "io.kotest:kotest-assertions-core", version = "5.9.1" }
+
 libarchive = { module = "me.zhanghai.android.libarchive:library", version = "1.1.0" }
 
 material = { module = "com.google.android.material:material", version = "1.12.0" }
@@ -112,7 +114,7 @@ logging = [ "kermit" ]
 # FIXME: Uncomment once SQLDelight support KMP AndroidX SQLiteDriver
 #sqlite = [ "sqlite", "sqlite-ktx" ]
 sqlite = [ "sqlite-ktx" ]
-test = [ "junit-api", "mockk" ]
+test = [ "junit-api", "kotest-assertions", "mockk" ]
 test-android = [ "junit-android" ]
 test-runtime = [ "junit-engine" ]
 voyager = ["voyager-navigator", "voyager-transitions"]