This DLC is playable in Taiko no Tatsujin: Rhythm Festival game modes like Taiko Mode, Great Drum Toy War, Run! Ninja Dojo, and DON DON Fitness.

- Song: Idol / YOASOBI / From TV Animation 【OSHI NO KO】
Easy ★3, Normal ★4, Hard ★4, Extreme ★8
- Song: Sign is B -New Arrange Ver.- / B-KOMACHI / From TV Animation 【OSHI NO KO】
Easy ★2, Normal ★4, Hard ★4, Extreme ★6
- Song: Fatal / GEMN / From TV Animation 【OSHI NO KO】
Easy ★2, Normal ★3, Hard ★5, Extreme ★6
- 【OSHI NO KO】 collab. stage for use in DON DON Fitness mode.
- Mini Characters: Ai (Idol Outfit), Ruby (Idol Outfit), Kana Arima (Idol Outfit), MEMcho (Idol Outfit), Aqua (Touki), Akane Kurokawa (Princess Saya), Kana Arima (Tsurugi), Taiki Himekawa (Blade), Ai (Collab Outfit), Ruby (Collab Outfit), Aqua (Collab Outfit)
- Mascot: Ai Don-chan
- Nameplates (3 types)
- Titles (10 types)
*The mini characters, nameplates and titles can be obtained by playing on the 【OSHI NO KO】 collab. stage in DON DON Fitness mode.
*The mini characters, costumes, nameplates, and titles can be changed in My Room.

*This product is not compatible with Taiko no Tatsujin: Drum'n'Fun!

More details on the official game page of Taiko no Tatsujin: Rhythm Festival - 【OSHI NO KO】Collab. Pack ...