diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 585483f3..425bd77a 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -18,6 +18,7 @@
           <package name="" alias="true" withSubpackages="true" />
         </value>
       </option>
+      <option name="ALLOW_TRAILING_COMMA" value="true" />
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
     </JetCodeStyleSettings>
     <codeStyleSettings language="XML">
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
index 4574b689..f5782a6e 100644
--- a/.idea/jarRepositories.xml
+++ b/.idea/jarRepositories.xml
@@ -81,5 +81,10 @@
       <option name="name" value="maven2" />
       <option name="url" value="https://oss.sonatype.org/content/repositories/snapshots" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenLocal" />
+      <option name="name" value="MavenLocal" />
+      <option name="url" value="file:/$USER_HOME$/.m2/repository/" />
+    </remote-repository>
   </component>
 </project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 1486e20d..24cff645 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -134,9 +134,9 @@ dependencies {
 
     implementation "ru.noties.markwon:core:3.1.0"
 
-    implementation "xyz.quaver:libpupil:1.9.7-SNAPSHOT"
+    implementation "xyz.quaver:libpupil:1.9.7"
     implementation "xyz.quaver:documentfilex:0.4-alpha02"
-    implementation "xyz.quaver:floatingsearchview:1.1.1"
+    implementation "xyz.quaver:floatingsearchview:1.1.3-SNAPSHOT"
 
     implementation "com.orhanobut:logger:2.2.0"
 
diff --git a/app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt b/app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt
index 93d72678..06dee2c4 100644
--- a/app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt
+++ b/app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt
@@ -55,7 +55,7 @@ class MirrorAdapter(context: Context) : RecyclerView.Adapter<MirrorAdapter.ViewH
     val list = mirrors.keys.toMutableList().apply {
         Preferences.get<String>("mirrors")
             .split(">")
-            .reversed()
+            .asReversed()
             .forEach {
                 if (this.contains(it)) {
                     this.remove(it)
diff --git a/app/src/main/java/xyz/quaver/pupil/sources/History.kt b/app/src/main/java/xyz/quaver/pupil/sources/History.kt
index c4004df6..e74bcdc8 100644
--- a/app/src/main/java/xyz/quaver/pupil/sources/History.kt
+++ b/app/src/main/java/xyz/quaver/pupil/sources/History.kt
@@ -18,15 +18,12 @@
 
 package xyz.quaver.pupil.sources
 
-import android.util.Log
-import com.orhanobut.logger.Logger
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.launch
 import org.kodein.di.DI
 import org.kodein.di.DIAware
-import org.kodein.di.android.di
 import org.kodein.di.instance
 import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
 import xyz.quaver.pupil.util.SavedSourceSet
@@ -47,9 +44,11 @@ class History(override val di: DI, source: String) : Source<DefaultSortMode, Sea
         val channel = Channel<ItemInfo>()
 
         CoroutineScope(Dispatchers.IO).launch {
-            histories.map[source.name]?.forEach {
+            histories[source.name]?.asReversed()?.forEach {
                 channel.send(source.info(it))
             }
+
+            channel.close()
         }
 
         return Pair(channel, histories.map.size)
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt b/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
index 87896078..9986643b 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt
@@ -148,6 +148,7 @@ class MainActivity :
                 } else {
                     binding.contents.progressbar.hide()
                     if (it.isEmpty()) {
+                        binding.contents.recyclerview.adapter?.notifyDataSetChanged()
                         binding.contents.noresult.show()
                     } else {
                         binding.contents.recyclerview.adapter?.notifyItemInserted(it.size-1)
@@ -396,7 +397,7 @@ class MainActivity :
                 onActionMenuItemSelected(it)
             }
 
-            onQueryChangeListener = lambda@{ _, query ->
+            onQueryChangeListener = { _, query ->
                 model.query.value = query
 
                 model.suggestion()
@@ -404,9 +405,7 @@ class MainActivity :
                 swapSuggestions(listOf(LoadingSuggestion(getText(R.string.reader_loading).toString())))
             }
 
-            onSuggestionBinding = { binding, item ->
-                model.source.value!!.onSuggestionBind(binding, item)
-            }
+            onSuggestionBinding = model.source.value!!::onSuggestionBind
 
             onFocusChangeListener = object: FloatingSearchView.OnFocusChangeListener {
                 override fun onFocus() {
@@ -450,24 +449,13 @@ class MainActivity :
             binding.drawer.closeDrawers()
 
             when(item.itemId) {
-                R.id.main_drawer_history -> {
-                    //model.setSourceAndReset(direct.instance<String, History>(arg = source.name))
-                }
-                R.id.main_drawer_help -> {
-                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.help))))
-                }
-                R.id.main_drawer_github -> {
-                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.github))))
-                }
-                R.id.main_drawer_homepage -> {
-                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.home_page))))
-                }
-                R.id.main_drawer_email -> {
-                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.email))))
-                }
-                R.id.main_drawer_kakaotalk -> {
-                    startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.discord))))
-                }
+                R.id.main_drawer_home -> model.setModeAndReset(MainViewModel.MainMode.SEARCH)
+                R.id.main_drawer_history -> model.setModeAndReset(MainViewModel.MainMode.HISTORY)
+                R.id.main_drawer_help -> startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.help))))
+                R.id.main_drawer_github -> startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.github))))
+                R.id.main_drawer_homepage -> startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.home_page))))
+                R.id.main_drawer_email -> startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.email))))
+                R.id.main_drawer_kakaotalk -> startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.discord))))
             }
         }
 
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt b/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
index c4d5256a..4bd2bfc5 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt
@@ -141,7 +141,7 @@ class ReaderActivity : BaseActivity(), DIAware {
         menu?.forEach {
             when (it.itemId) {
                 R.id.reader_menu_favorite -> {
-                    if (favorites.map[source]?.contains(itemID) == true)
+                    if (favorites[source]?.contains(itemID) == true)
                         (it.icon as Animatable).start()
                 }
                 R.id.source -> {
@@ -160,7 +160,7 @@ class ReaderActivity : BaseActivity(), DIAware {
                 val id = itemID
                 val favorite = menu?.findItem(R.id.reader_menu_favorite) ?: return true
 
-                if (favorites.map[source]?.contains(id) == true) {
+                if (favorites[source]?.contains(id) == true) {
                     favorites.remove(source, id)
                     favorite.icon = AnimatedVectorDrawableCompat.create(this, R.drawable.avd_star)
                 } else {
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/view/TagChip.kt b/app/src/main/java/xyz/quaver/pupil/ui/view/TagChip.kt
index 42fcb609..d9058f14 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/view/TagChip.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/view/TagChip.kt
@@ -75,7 +75,7 @@ class TagChip(context: Context, private val source: String, _tag: Tag) : Chip(co
         )
 
         setOnCloseIconClickListener {
-            if (favoriteTags.map[source]?.contains(tag.toString()) == true) {
+            if (favoriteTags[source]?.contains(tag.toString()) == true) {
                 favoriteTags.remove(source, tag.toString())
                 closeIcon = ContextCompat.getDrawable(context, R.drawable.ic_star_empty)
 
diff --git a/app/src/main/java/xyz/quaver/pupil/ui/viewmodel/MainViewModel.kt b/app/src/main/java/xyz/quaver/pupil/ui/viewmodel/MainViewModel.kt
index 958facfc..da4dffa9 100644
--- a/app/src/main/java/xyz/quaver/pupil/ui/viewmodel/MainViewModel.kt
+++ b/app/src/main/java/xyz/quaver/pupil/ui/viewmodel/MainViewModel.kt
@@ -25,8 +25,10 @@ import kotlinx.coroutines.*
 import org.kodein.di.DIAware
 import org.kodein.di.android.x.di
 import org.kodein.di.direct
+import org.kodein.di.instance
 import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
 import xyz.quaver.pupil.sources.AnySource
+import xyz.quaver.pupil.sources.History
 import xyz.quaver.pupil.sources.ItemInfo
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.notify
@@ -37,7 +39,6 @@ import kotlin.random.Random
 
 @Suppress("UNCHECKED_CAST")
 class MainViewModel(app: Application) : AndroidViewModel(app), DIAware {
-
     override val di by di()
 
     private val _searchResults = MutableLiveData<MutableList<ItemInfo>>()
@@ -51,6 +52,10 @@ class MainViewModel(app: Application) : AndroidViewModel(app), DIAware {
     val query = MutableLiveData<String>()
     private val queryStack = mutableListOf<String>()
 
+    private val defaultSourceFactory: (String) -> AnySource = {
+        direct.source(it)
+    }
+    private var sourceFactory: (String) -> AnySource = defaultSourceFactory
     private val _source = MutableLiveData<AnySource>()
     val source: LiveData<AnySource> = _source
 
@@ -82,7 +87,7 @@ class MainViewModel(app: Application) : AndroidViewModel(app), DIAware {
     }
 
     fun setSourceAndReset(sourceName: String) {
-        _source.value = direct.source(sourceName).also {
+        _source.value = sourceFactory(sourceName).also {
             sortMode.value = it.availableSortMode.first()
         }
 
@@ -97,6 +102,16 @@ class MainViewModel(app: Application) : AndroidViewModel(app), DIAware {
         query()
     }
 
+    fun setModeAndReset(mode: MainMode) {
+        sourceFactory = when (mode) {
+            MainMode.SEARCH -> defaultSourceFactory
+            MainMode.HISTORY -> { { direct.instance<String, History>(arg = it) } }
+            else -> return
+        }
+
+        setSourceAndReset(source.value!!.name)
+    }
+
     fun query() {
         val perPage = Preferences["per_page", "25"].toInt()
         val source = _source.value ?: error("Source is null")
@@ -181,4 +196,11 @@ class MainViewModel(app: Application) : AndroidViewModel(app), DIAware {
         return true
     }
 
+    enum class MainMode {
+        SEARCH,
+        HISTORY,
+        DOWNLOADS,
+        FAVORITES
+    }
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/xyz/quaver/pupil/util/SavedCollections.kt b/app/src/main/java/xyz/quaver/pupil/util/SavedCollections.kt
index 37131e4a..50bd9c6d 100644
--- a/app/src/main/java/xyz/quaver/pupil/util/SavedCollections.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/SavedCollections.kt
@@ -21,81 +21,14 @@ package xyz.quaver.pupil.util
 import androidx.annotation.RequiresApi
 import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.KSerializer
+import kotlinx.serialization.builtins.ListSerializer
 import kotlinx.serialization.builtins.MapSerializer
-import kotlinx.serialization.builtins.SetSerializer
 import kotlinx.serialization.builtins.serializer
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.Json.Default.decodeFromString
 import kotlinx.serialization.serializer
 import java.io.File
 
-class SavedSet <T: Any> (private val file: File, any: T, private val set: MutableSet<T> = mutableSetOf()) : MutableSet<T> by set {
-
-    @Suppress("UNCHECKED_CAST")
-    @OptIn(ExperimentalSerializationApi::class)
-    val serializer: KSerializer<Set<T>> = SetSerializer(serializer(any::class.java) as KSerializer<T>)
-
-    init {
-        if (!file.exists()) {
-            save()
-        }
-        load()
-    }
-
-    @Synchronized
-    fun load() {
-        set.clear()
-        kotlin.runCatching {
-            decodeFromString(serializer, file.readText())
-        }.onSuccess {
-            set.addAll(it)
-        }
-    }
-
-    @Synchronized
-    fun save() {
-        file.parentFile?.mkdirs()
-        if (!file.exists())
-            file.createNewFile()
-
-        file.writeText(Json.encodeToString(serializer, set))
-    }
-
-    @Synchronized
-    override fun add(element: T): Boolean {
-        set.remove(element)
-
-        return set.add(element).also {
-            save()
-        }
-    }
-
-    @Synchronized
-    override fun addAll(elements: Collection<T>): Boolean {
-        set.removeAll(elements)
-
-        return set.addAll(elements).also {
-            save()
-        }
-    }
-
-    @Synchronized
-    override fun remove(element: T): Boolean {
-        load()
-
-        return set.remove(element).also {
-            save()
-        }
-    }
-
-    @Synchronized
-    override fun clear() {
-        set.clear()
-        save()
-    }
-
-}
-
 class SavedMap <K: Any, V: Any> (private val file: File, anyKey: K, anyValue: V, private val map: MutableMap<K, V> = mutableMapOf()) : MutableMap<K, V> by map {
 
     @Suppress("UNCHECKED_CAST")
@@ -172,11 +105,10 @@ class SavedMap <K: Any, V: Any> (private val file: File, anyKey: K, anyValue: V,
 }
 
 class SavedSourceSet(private val file: File) {
+    private val _map = mutableMapOf<String, MutableList<String>>()
+    val map: Map<String, List<String>> = _map
 
-    private val _map = mutableMapOf<String, MutableSet<String>>()
-    val map: Map<String, Set<String>> = _map
-
-    private val serializer = MapSerializer(String.serializer(), SetSerializer(String.serializer()))
+    private val serializer = MapSerializer(String.serializer(), ListSerializer(String.serializer()))
 
     @Synchronized
     fun load() {
@@ -185,7 +117,7 @@ class SavedSourceSet(private val file: File) {
             decodeFromString(serializer, file.readText())
         }.onSuccess {
             it.forEach { (k, v) ->
-                _map[k] = v.toMutableSet()
+                _map[k] = v.toMutableList()
             }
         }
     }
@@ -199,6 +131,8 @@ class SavedSourceSet(private val file: File) {
         file.writeText(Json.encodeToString(serializer, _map))
     }
 
+    operator fun get(key: String) = _map[key]
+
     @Synchronized
     fun add(source: String, value: String) {
         load()
@@ -206,7 +140,7 @@ class SavedSourceSet(private val file: File) {
         _map[source]?.remove(value)
 
         if (!_map.containsKey(source))
-            _map[source] = mutableSetOf()
+            _map[source] = mutableListOf()
         else
             _map[source]!!.add(value)
 
@@ -222,7 +156,7 @@ class SavedSourceSet(private val file: File) {
                 _map[source]!!.removeAll(from[source]!!)
                 _map[source]!!.addAll(from[source]!!)
             } else {
-                _map[source] = from[source]!!.toMutableSet()
+                _map[source] = from[source]!!.toMutableList()
             }
         }
 
diff --git a/app/src/main/res/drawable/clock_end.xml b/app/src/main/res/drawable/clock_end.xml
index 8f636ac6..4d205a72 100644
--- a/app/src/main/res/drawable/clock_end.xml
+++ b/app/src/main/res/drawable/clock_end.xml
@@ -1,3 +1,21 @@
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2021  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
 <!--drawable/clock_end.xml-->
 <vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
     <path android:fillColor="#fff" android:pathData="M12 1C8.14 1 5 4.14 5 8a7 7 0 0 0 7 7c3.86 0 7-3.13 7-7 0-3.86-3.14-7-7-7m0 2.15c2.67 0 4.85 2.17 4.85 4.85 0 2.68-2.18 4.85-4.85 4.85A4.85 4.85 0 0 1 7.15 8 4.85 4.85 0 0 1 12 3.15M11 5v3.69l3.19 1.84 0.75-1.3-2.44-1.41V5M15 16v3H3v2h12v3l4-4m0 0v4h2v-8h-2"/>
diff --git a/app/src/main/res/drawable/clock_start.xml b/app/src/main/res/drawable/clock_start.xml
index f131c300..c9d24b92 100644
--- a/app/src/main/res/drawable/clock_start.xml
+++ b/app/src/main/res/drawable/clock_start.xml
@@ -1,3 +1,21 @@
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2021  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
 <!--drawable/clock_start.xml-->
 <vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:width="24dp" android:viewportWidth="24" android:viewportHeight="24">
     <path android:fillColor="#fff" android:pathData="M12 1C8.14 1 5 4.14 5 8a7 7 0 0 0 7 7c3.86 0 7-3.13 7-7 0-3.86-3.14-7-7-7m0 2.15c2.67 0 4.85 2.17 4.85 4.85 0 2.68-2.18 4.85-4.85 4.85A4.85 4.85 0 0 1 7.15 8 4.85 4.85 0 0 1 12 3.15M11 5v3.69l3.19 1.84 0.75-1.3-2.44-1.41V5M4 16v8h2v-3h12v3l4-4-4-4v3H6v-3"/>
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index 85bb0c21..1e2fd1df 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -19,24 +19,4 @@
         <item>SOCKS</item>
     </string-array>
 
-    <string-array name="cache_size">
-        <item>0</item>
-        <item>1</item>
-        <item>2</item>
-        <item>4</item>
-        <item>8</item>
-        <item>16</item>
-        <item>32</item>
-    </string-array>
-
-    <string-array name="cache_size_text">
-        <item>@string/settings_cache_unlimited</item>
-        <item>1G</item>
-        <item>2G</item>
-        <item>4G</item>
-        <item>8G</item>
-        <item>16G</item>
-        <item>32G</item>
-    </string-array>
-
 </resources>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index a8a3c669..07ba2d73 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,7 +13,7 @@ buildscript {
         classpath "com.google.gms:google-services:4.3.5"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
-        classpath "com.google.firebase:firebase-crashlytics-gradle:2.4.1"
+        classpath "com.google.firebase:firebase-crashlytics-gradle:2.5.0"
         classpath "com.google.firebase:perf-plugin:1.3.4"
         classpath "com.google.android.gms:oss-licenses-plugin:0.10.2"
     }