Scarlet Devil Mansion but make it a rhythm game and somehow it works perfectly. Touhou Rhythm Carnival! Kurenai takes EoSD's cast and gives every character their own minigame track. ぱっくんルーミア is this goofy chomping theme that has no right being so catchy.
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紅魔館防衛戦線 goes full battle march for the mansion defense segments, then Maidsweeper turns Sakuya's maid duties into this tight, precise beat. フランドールマーチ gives Flan a military march that's equal parts adorable and unhinged. Every track has a Hard variant too, same melody but cranked.
The whole soundtrack just radiates this chaotic fun energy. Perfect for anyone who thinks Touhou needs more rhythm game energy in their life.