diff --git a/api/albums/ALBUM44.json b/api/albums/ALBUM44.json
index 51ff91b..48232e0 100644
--- a/api/albums/ALBUM44.json
+++ b/api/albums/ALBUM44.json
@@ -1119,11 +1119,11 @@
 	    "difficulty1": "6",
 	    "difficulty2": "8",
 	    "difficulty3": "10",
-        "difficulty4": "11",
+        "difficulty4": "12",
 	    "callBackDifficulty1": "6",
 	    "callBackDifficulty2": "8",
 	    "callBackDifficulty3": "10",
-        "callBackDifficulty4": "11",
+        "callBackDifficulty4": "12",
 	    "unlockLevel": "0"
     }
 ]
diff --git a/api/albums/ALBUM75.json b/api/albums/ALBUM75.json
new file mode 100644
index 0000000..8d37242
--- /dev/null
+++ b/api/albums/ALBUM75.json
@@ -0,0 +1,138 @@
+[
+	{
+		"uid": "74-0",
+		"name": "光線チューニング",
+		"author": "ナユタン星人",
+		"bpm": "190",
+		"music": "ray_tuning_music",
+		"demo": "ray_tuning_demo",
+		"cover": "ray_tuning_cover",
+		"hexieCover": "",
+		"noteJson": "ray_tuning_map",
+		"scene": "scene_05",
+		"levelDesigner": "(σ`□´)σ････…━━━━☆ばきゅん!!",
+		"difficulty1": "6",
+		"difficulty2": "8",
+		"difficulty3": "10",
+		"callBackDifficulty1": "6",
+		"callBackDifficulty2": "8",
+		"callBackDifficulty3": "10",
+		"unlockLevel": "0"
+	},
+	{
+		"uid": "74-1",
+		"name": "World Vanquishe",
+		"author": "void (Mournfinale)",
+		"bpm": "170",
+		"music": "world_vanquisher_music",
+		"demo": "world_vanquisher_demo",
+		"cover": "world_vanquisher_cover",
+		"hexieCover": "",
+		"noteJson": "world_vanquisher_map",
+		"scene": "scene_01",
+		"levelDesigner1": "エターナル·プログラム",
+		"levelDesigner2": "エターナル·プログラム",
+		"levelDesigner3": "エターナル·プログラム",
+		"levelDesigner4": "「処刑人」エターナル",
+		"difficulty1": "6",
+		"difficulty2": "8",
+		"difficulty3": "10",
+		"difficulty4": "11",
+		"callBackDifficulty1": "6",
+		"callBackDifficulty2": "8",
+		"callBackDifficulty3": "10",
+		"callBackDifficulty4": "11",
+		"unlockLevel": "0"
+	},
+	{
+		"uid": "74-2",
+		"name": "テリトリーバトル",
+		"author": "ツユ",
+		"bpm": "140",
+		"music": "territory_battle_music",
+		"demo": "territory_battle_demo",
+		"cover": "territory_battle_cover",
+		"hexieCover": "",
+		"noteJson": "territory_battle_map",
+		"scene": "scene_01",
+		"levelDesigner1": "RIN",
+		"levelDesigner2": "RIN-ver.0419",
+		"levelDesigner3": "返せ！返せ！ボクのMDを",
+		"difficulty1": "5",
+		"difficulty2": "7",
+		"difficulty3": "9",
+		"callBackDifficulty1": "5",
+		"callBackDifficulty2": "7",
+		"callBackDifficulty3": "9",
+		"unlockLevel": "0"
+	},
+	{
+		"uid": "74-3",
+		"name": "The wheel to the right",
+		"author": "Sampling Masters MEGA",
+		"bpm": "200",
+		"music": "the_wheel_to_the_right_music",
+		"demo": "the_wheel_to_the_right_demo",
+		"cover": "the_wheel_to_the_right_cover",
+		"hexieCover": "",
+		"noteJson": "the_wheel_to_the_right_map",
+		"scene": "scene_01",
+		"levelDesigner": "HXJ_ConveX",
+		"difficulty1": "5",
+		"difficulty2": "7",
+		"difficulty3": "9",
+		"difficulty4": "11",
+		"callBackDifficulty1": "5",
+		"callBackDifficulty2": "7",
+		"callBackDifficulty3": "9",
+		"callBackDifficulty4": "11",
+		"unlockLevel": "0"
+	},
+	{
+		"uid": "74-4",
+		"name": "Climax",
+		"author": "USAO",
+		"bpm": "190",
+		"music": "climax_music",
+		"demo": "climax_demo",
+		"cover": "climax_cover",
+		"hexieCover": "",
+		"noteJson": "climax_map",
+		"scene": "scene_03",
+		"levelDesigner1": "無極‖The Metaverse‖",
+		"levelDesigner2": "《無極》 ～ Rayix",
+		"levelDesigner3": "『憎悪の戦神』無極",
+		"levelDesigner4": "Rayix -FINAL ROUND-",
+		"difficulty1": "4",
+		"difficulty2": "8",
+		"difficulty3": "11",
+		"difficulty4": "11",
+		"callBackDifficulty1": "4",
+		"callBackDifficulty2": "8",
+		"callBackDifficulty3": "11",
+		"callBackDifficulty4": "11",
+		"unlockLevel": "0"
+	},
+	{
+		"uid": "74-5",
+		"name": "蜘蛛の糸",
+		"author": "きくお×cosMo＠暴走P feat.影縫英",
+		"bpm": "180",
+		"music": "spiders_thread_music",
+		"demo": "spiders_thread_demo",
+		"cover": "spiders_thread_cover",
+		"hexieCover": "",
+		"noteJson": "spiders_thread_map",
+		"scene": "scene_03",
+		"levelDesigner": "Howard_Y",
+		"difficulty1": "5",
+		"difficulty2": "8",
+		"difficulty3": "10",
+		"difficulty4": "12",
+		"callBackDifficulty1": "5",
+		"callBackDifficulty2": "8",
+		"callBackDifficulty3": "10",
+		"callBackDifficulty4": "12",
+		"unlockLevel": "0"
+	}
+]
\ No newline at end of file
diff --git a/api/albums/ALBUM75_ChineseS.json b/api/albums/ALBUM75_ChineseS.json
new file mode 100644
index 0000000..3493991
--- /dev/null
+++ b/api/albums/ALBUM75_ChineseS.json
@@ -0,0 +1,26 @@
+[
+	{
+		"name": "光線チューニング",
+		"author": "ナユタン星人"
+	},
+	{
+		"name": "World Vanquisher",
+		"author": "void (Mournfinale)"
+	},
+	{
+		"name": "テリトリーバトル",
+		"author": "ツユ"
+	},
+	{
+		"name": "The wheel to the right",
+		"author": "Sampling Masters MEGA"
+	},
+	{
+		"name": "Climax",
+		"author": "USAO"
+	},
+	{
+		"name": "蜘蛛の糸",
+		"author": "きくお×cosMo＠暴走P feat.影縫英"
+	}
+]
\ No newline at end of file
diff --git a/api/albums/ALBUM75_ChineseT.json b/api/albums/ALBUM75_ChineseT.json
new file mode 100644
index 0000000..3493991
--- /dev/null
+++ b/api/albums/ALBUM75_ChineseT.json
@@ -0,0 +1,26 @@
+[
+	{
+		"name": "光線チューニング",
+		"author": "ナユタン星人"
+	},
+	{
+		"name": "World Vanquisher",
+		"author": "void (Mournfinale)"
+	},
+	{
+		"name": "テリトリーバトル",
+		"author": "ツユ"
+	},
+	{
+		"name": "The wheel to the right",
+		"author": "Sampling Masters MEGA"
+	},
+	{
+		"name": "Climax",
+		"author": "USAO"
+	},
+	{
+		"name": "蜘蛛の糸",
+		"author": "きくお×cosMo＠暴走P feat.影縫英"
+	}
+]
\ No newline at end of file
diff --git a/api/albums/ALBUM75_English.json b/api/albums/ALBUM75_English.json
new file mode 100644
index 0000000..92cacee
--- /dev/null
+++ b/api/albums/ALBUM75_English.json
@@ -0,0 +1,26 @@
+[
+	{
+		"name": "Ray Tuning",
+		"author": "NayutalieN"
+	},
+	{
+		"name": "World Vanquisher",
+		"author": "void (Mournfinale)"
+	},
+	{
+		"name": "Territory Battles",
+		"author": "TUYU"
+	},
+	{
+		"name": "The wheel to the right",
+		"author": "Sampling Masters MEGA"
+	},
+	{
+		"name": "Climax",
+		"author": "USAO"
+	},
+	{
+		"name": "Spider's Thread",
+		"author": "kikuo×cosMo@Bousou-P  feat.kagenui hana"
+	}
+]
\ No newline at end of file
diff --git a/api/albums/ALBUM75_Japanese.json b/api/albums/ALBUM75_Japanese.json
new file mode 100644
index 0000000..3493991
--- /dev/null
+++ b/api/albums/ALBUM75_Japanese.json
@@ -0,0 +1,26 @@
+[
+	{
+		"name": "光線チューニング",
+		"author": "ナユタン星人"
+	},
+	{
+		"name": "World Vanquisher",
+		"author": "void (Mournfinale)"
+	},
+	{
+		"name": "テリトリーバトル",
+		"author": "ツユ"
+	},
+	{
+		"name": "The wheel to the right",
+		"author": "Sampling Masters MEGA"
+	},
+	{
+		"name": "Climax",
+		"author": "USAO"
+	},
+	{
+		"name": "蜘蛛の糸",
+		"author": "きくお×cosMo＠暴走P feat.影縫英"
+	}
+]
\ No newline at end of file
diff --git a/api/albums/ALBUM75_Korean.json b/api/albums/ALBUM75_Korean.json
new file mode 100644
index 0000000..92cacee
--- /dev/null
+++ b/api/albums/ALBUM75_Korean.json
@@ -0,0 +1,26 @@
+[
+	{
+		"name": "Ray Tuning",
+		"author": "NayutalieN"
+	},
+	{
+		"name": "World Vanquisher",
+		"author": "void (Mournfinale)"
+	},
+	{
+		"name": "Territory Battles",
+		"author": "TUYU"
+	},
+	{
+		"name": "The wheel to the right",
+		"author": "Sampling Masters MEGA"
+	},
+	{
+		"name": "Climax",
+		"author": "USAO"
+	},
+	{
+		"name": "Spider's Thread",
+		"author": "kikuo×cosMo@Bousou-P  feat.kagenui hana"
+	}
+]
\ No newline at end of file
diff --git a/api/albums/albums.json b/api/albums/albums.json
index 50f817b..91a5db2 100644
--- a/api/albums/albums.json
+++ b/api/albums/albums.json
@@ -29,6 +29,16 @@
       "prefabsName": "AlbumDisco44",
       "free": false
   },
+  {
+    "uid": "music_package_74",
+    "title": "CHUNITHM CLASS MUSE",
+    "tag": "Other",
+    "needPurchase": true,
+    "price": "¥25.00",
+    "jsonName": "ALBUM75",
+    "prefabsName": "AlbumDisco75",
+    "free": false
+  },
   {
     "uid": "music_package_73",
     "title": "肥宅快乐包 Vol.19",
diff --git a/api/albums/albums_ChineseS.json b/api/albums/albums_ChineseS.json
index fd1577d..2290605 100644
--- a/api/albums/albums_ChineseS.json
+++ b/api/albums/albums_ChineseS.json
@@ -8,6 +8,9 @@
 	{
 		"title": "MD 补完计划"
 	},
+	{
+		"title": "CHUNITHM CLASS MUSE"
+	},
 	{
 		"title": "肥宅快乐包 Vol.19"
 	},
diff --git a/api/albums/albums_ChineseT.json b/api/albums/albums_ChineseT.json
index 8e84a93..a0b2cce 100644
--- a/api/albums/albums_ChineseT.json
+++ b/api/albums/albums_ChineseT.json
@@ -8,6 +8,9 @@
 	{
 		"title": "MD 補完計劃"
 	},
+	{
+		"title": "CHUNITHM CLASS MUSE"
+	},
 	{
 		"title": "肥宅快樂包 Vol.19"
 	},
diff --git a/api/albums/albums_English.json b/api/albums/albums_English.json
index 84f0082..a90e455 100644
--- a/api/albums/albums_English.json
+++ b/api/albums/albums_English.json
@@ -8,6 +8,9 @@
 	{
 		"title": "MD Plus Project"
 	},
+	{
+		"title": "CHUNITHM COURSE MUSE"
+	},
 	{
 		"title": "Happy Otaku Pack Vol.19"
 	},
diff --git a/api/albums/albums_Japanese.json b/api/albums/albums_Japanese.json
index a3f4db4..6f655a1 100644
--- a/api/albums/albums_Japanese.json
+++ b/api/albums/albums_Japanese.json
@@ -8,6 +8,9 @@
 	{
 		"title": "MD 補完計画"
 	},
+	{
+		"title": "CHUNITHM CLASS MUSE"
+	},
 	{
 		"title": "MUSIC快楽天 Vol.19"
 	},
diff --git a/api/albums/albums_Korean.json b/api/albums/albums_Korean.json
index 42f4eae..b38b099 100644
--- a/api/albums/albums_Korean.json
+++ b/api/albums/albums_Korean.json
@@ -8,6 +8,9 @@
 	{
 		"title": "MD 보완 계획"
 	},
+	{
+		"title": "CHUNITHM COURSE MUSE"
+	},
 	{
 		"title": "오타쿠의 쾌락 모음 Vol.19"
 	},
diff --git a/covers-raw/climax_cover.png b/covers-raw/climax_cover.png
new file mode 100644
index 0000000..b307a3f
Binary files /dev/null and b/covers-raw/climax_cover.png differ
diff --git a/covers-raw/ray_tuning_cover.png b/covers-raw/ray_tuning_cover.png
new file mode 100644
index 0000000..8da143e
Binary files /dev/null and b/covers-raw/ray_tuning_cover.png differ
diff --git a/covers-raw/spiders_thread_cover.png b/covers-raw/spiders_thread_cover.png
new file mode 100644
index 0000000..e0dce29
Binary files /dev/null and b/covers-raw/spiders_thread_cover.png differ
diff --git a/covers-raw/territory_battle_cover.png b/covers-raw/territory_battle_cover.png
new file mode 100644
index 0000000..590e6c3
Binary files /dev/null and b/covers-raw/territory_battle_cover.png differ
diff --git a/covers-raw/the_wheel_to_the_right_cover.png b/covers-raw/the_wheel_to_the_right_cover.png
new file mode 100644
index 0000000..42d5829
Binary files /dev/null and b/covers-raw/the_wheel_to_the_right_cover.png differ
diff --git a/covers-raw/world_vanquisher_cover.png b/covers-raw/world_vanquisher_cover.png
new file mode 100644
index 0000000..ebc8733
Binary files /dev/null and b/covers-raw/world_vanquisher_cover.png differ
diff --git a/src/covers/climax_cover.png b/src/covers/climax_cover.png
new file mode 100644
index 0000000..1bb12b5
Binary files /dev/null and b/src/covers/climax_cover.png differ
diff --git a/src/covers/ray_tuning_cover.png b/src/covers/ray_tuning_cover.png
new file mode 100644
index 0000000..acf2823
Binary files /dev/null and b/src/covers/ray_tuning_cover.png differ
diff --git a/src/covers/spiders_thread_cover.png b/src/covers/spiders_thread_cover.png
new file mode 100644
index 0000000..b348e8a
Binary files /dev/null and b/src/covers/spiders_thread_cover.png differ
diff --git a/src/covers/territory_battle_cover.png b/src/covers/territory_battle_cover.png
new file mode 100644
index 0000000..638d58e
Binary files /dev/null and b/src/covers/territory_battle_cover.png differ
diff --git a/src/covers/the_wheel_to_the_right_cover.png b/src/covers/the_wheel_to_the_right_cover.png
new file mode 100644
index 0000000..fcd0f50
Binary files /dev/null and b/src/covers/the_wheel_to_the_right_cover.png differ
diff --git a/src/covers/world_vanquisher_cover.png b/src/covers/world_vanquisher_cover.png
new file mode 100644
index 0000000..d49bb19
Binary files /dev/null and b/src/covers/world_vanquisher_cover.png differ