diff --git a/app/src/main/java/ani/dantotsu/media/CalendarActivity.kt b/app/src/main/java/ani/dantotsu/media/CalendarActivity.kt
index 66cec7e4..230f3a4e 100644
--- a/app/src/main/java/ani/dantotsu/media/CalendarActivity.kt
+++ b/app/src/main/java/ani/dantotsu/media/CalendarActivity.kt
@@ -30,6 +30,7 @@ class CalendarActivity : AppCompatActivity() {
     private lateinit var binding: ActivityListBinding
     private val scope = lifecycleScope
     private var selectedTabIdx = 1
+    private var showOnlyLibrary = false
     private val model: OtherDetailsViewModel by viewModels()
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -38,8 +39,6 @@ class CalendarActivity : AppCompatActivity() {
         ThemeManager(this).applyTheme()
         binding = ActivityListBinding.inflate(layoutInflater)
 
-
-
         val primaryColor = getThemeColor(com.google.android.material.R.attr.colorSurface)
         val primaryTextColor = getThemeColor(com.google.android.material.R.attr.colorPrimary)
         val secondaryTextColor = getThemeColor(com.google.android.material.R.attr.colorOutline)
@@ -79,6 +78,17 @@ class CalendarActivity : AppCompatActivity() {
             override fun onTabReselected(tab: TabLayout.Tab?) {}
         })
 
+        binding.listed.setOnClickListener {
+            showOnlyLibrary = !showOnlyLibrary
+            binding.listed.setImageResource(
+                if (showOnlyLibrary) R.drawable.ic_round_collections_bookmark_24
+                else R.drawable.ic_round_library_books_24
+            )
+            scope.launch {
+                model.loadCalendar(showOnlyLibrary)
+            }
+        }
+
         model.getCalendar().observe(this) {
             if (it != null) {
                 binding.listProgressBar.visibility = View.GONE
@@ -97,11 +107,10 @@ class CalendarActivity : AppCompatActivity() {
         live.observe(this) {
             if (it) {
                 scope.launch {
-                    withContext(Dispatchers.IO) { model.loadCalendar() }
+                    withContext(Dispatchers.IO) { model.loadCalendar(showOnlyLibrary) }
                     live.postValue(false)
                 }
             }
         }
-
     }
 }
diff --git a/app/src/main/java/ani/dantotsu/media/OtherDetailsViewModel.kt b/app/src/main/java/ani/dantotsu/media/OtherDetailsViewModel.kt
index 0be0fc22..a086a765 100644
--- a/app/src/main/java/ani/dantotsu/media/OtherDetailsViewModel.kt
+++ b/app/src/main/java/ani/dantotsu/media/OtherDetailsViewModel.kt
@@ -26,25 +26,50 @@ class OtherDetailsViewModel : ViewModel() {
         if (author.value == null) author.postValue(Anilist.query.getAuthorDetails(m))
     }
 
+    private var cachedAllCalendarData: Map<String, MutableList<Media>>? = null
+    private var cachedLibraryCalendarData: Map<String, MutableList<Media>>? = null
     private val calendar: MutableLiveData<Map<String, MutableList<Media>>> = MutableLiveData(null)
     fun getCalendar(): LiveData<Map<String, MutableList<Media>>> = calendar
-    suspend fun loadCalendar() {
-        val curr = System.currentTimeMillis() / 1000
-        val res = Anilist.query.recentlyUpdated(curr - 86400, curr + (86400 * 6))
-        val df = DateFormat.getDateInstance(DateFormat.FULL)
-        val map = mutableMapOf<String, MutableList<Media>>()
-        val idMap = mutableMapOf<String, MutableList<Int>>()
-        res?.forEach {
-            val v = it.relation?.split(",")?.map { i -> i.toLong() }!!
-            val dateInfo = df.format(Date(v[1] * 1000))
-            val list = map.getOrPut(dateInfo) { mutableListOf() }
-            val idList = idMap.getOrPut(dateInfo) { mutableListOf() }
-            it.relation = "Episode ${v[0]}"
-            if (!idList.contains(it.id)) {
-                idList.add(it.id)
-                list.add(it)
+    suspend fun loadCalendar(showOnlyLibrary: Boolean = false) {
+        if (cachedAllCalendarData == null || cachedLibraryCalendarData == null) {
+            val curr = System.currentTimeMillis() / 1000
+            val res = Anilist.query.recentlyUpdated(curr - 86400, curr + (86400 * 6))
+            val df = DateFormat.getDateInstance(DateFormat.FULL)
+            val allMap = mutableMapOf<String, MutableList<Media>>()
+            val libraryMap = mutableMapOf<String, MutableList<Media>>()
+            val idMap = mutableMapOf<String, MutableList<Int>>()
+
+            val userId = Anilist.userid ?: 0
+            val userLibrary = Anilist.query.getMediaLists(true, userId)
+            val libraryMediaIds = userLibrary.flatMap { it.value }.map { it.id }
+
+            res.forEach {
+                val v = it.relation?.split(",")?.map { i -> i.toLong() }!!
+                val dateInfo = df.format(Date(v[1] * 1000))
+                val list = allMap.getOrPut(dateInfo) { mutableListOf() }
+                val libraryList = if (libraryMediaIds.contains(it.id)) {
+                    libraryMap.getOrPut(dateInfo) { mutableListOf() }
+                } else {
+                    null
+                }
+                val idList = idMap.getOrPut(dateInfo) { mutableListOf() }
+                it.relation = "Episode ${v[0]}"
+                if (!idList.contains(it.id)) {
+                    idList.add(it.id)
+                    list.add(it)
+                    libraryList?.add(it)
+                }
             }
+
+            cachedAllCalendarData = allMap
+            cachedLibraryCalendarData = libraryMap
         }
-        calendar.postValue(map)
+
+        val cacheToUse: Map<String, MutableList<Media>> = if (showOnlyLibrary) {
+            cachedLibraryCalendarData ?: emptyMap()
+        } else {
+            cachedAllCalendarData ?: emptyMap()
+        }
+        calendar.postValue(cacheToUse)
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ani/dantotsu/media/user/ListActivity.kt b/app/src/main/java/ani/dantotsu/media/user/ListActivity.kt
index 994a0c78..08109594 100644
--- a/app/src/main/java/ani/dantotsu/media/user/ListActivity.kt
+++ b/app/src/main/java/ani/dantotsu/media/user/ListActivity.kt
@@ -47,6 +47,7 @@ class ListActivity : AppCompatActivity() {
 
         window.statusBarColor = primaryColor
         window.navigationBarColor = primaryColor
+        binding.listed.visibility = View.GONE
         binding.listTabLayout.setBackgroundColor(primaryColor)
         binding.listAppBar.setBackgroundColor(primaryColor)
         binding.listTitle.setTextColor(primaryTextColor)
diff --git a/app/src/main/res/drawable/ic_round_library_books_24.xml b/app/src/main/res/drawable/ic_round_library_books_24.xml
new file mode 100644
index 00000000..ee9f6511
--- /dev/null
+++ b/app/src/main/res/drawable/ic_round_library_books_24.xml
@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M3,6c-0.55,0 -1,0.45 -1,1v13c0,1.1 0.9,2 2,2h13c0.55,0 1,-0.45 1,-1s-0.45,-1 -1,-1L5,20c-0.55,0 -1,-0.45 -1,-1L4,7c0,-0.55 -0.45,-1 -1,-1zM20,2L8,2c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM18,11h-8c-0.55,0 -1,-0.45 -1,-1s0.45,-1 1,-1h8c0.55,0 1,0.45 1,1s-0.45,1 -1,1zM14,15h-4c-0.55,0 -1,-0.45 -1,-1s0.45,-1 1,-1h4c0.55,0 1,0.45 1,1s-0.45,1 -1,1zM18,7h-8c-0.55,0 -1,-0.45 -1,-1s0.45,-1 1,-1h8c0.55,0 1,0.45 1,1s-0.45,1 -1,1z"/>
+    
+</vector>
diff --git a/app/src/main/res/layout/activity_list.xml b/app/src/main/res/layout/activity_list.xml
index 63aa5d81..d70668fc 100644
--- a/app/src/main/res/layout/activity_list.xml
+++ b/app/src/main/res/layout/activity_list.xml
@@ -55,6 +55,15 @@
                     app:srcCompat="@drawable/ic_round_search_24"
                     app:tint="?attr/colorOnBackground" />
 
+                <ImageButton
+                    android:id="@+id/listed"
+                    android:layout_width="40dp"
+                    android:layout_height="40dp"
+                    android:background="?android:attr/selectableItemBackground"
+                    android:contentDescription="@string/listed_in_library"
+                    app:srcCompat="@drawable/ic_round_library_books_24"
+                    app:tint="?attr/colorOnBackground" />
+
                 <ImageButton
                     android:id="@+id/random"
                     android:layout_width="40dp"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c1a78c8d..befeed04 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -714,6 +714,7 @@
     <string name="installed_manga">Installed Manga</string>
     <string name="color_picker">Color Picker</string>
     <string name="random_selection">Random Selection</string>
+    <string name="listed_in_library">Listed in Library</string>
     <string name="incognito_mode">Incognito Mode</string>
     <string name="appwidget_text">EXAMPLE</string>
     <string name="configure">Configure</string>