The whole thing is a boob piano. That's it. Eight tits, arranged like a scale, and you have to poke them in the right order to copy a melody. My first thought was this is the dumbest thing I've ever clicked on, and then I spent forty minutes failing to get past a tune that sounded like a broken music box. The anime art is deliberately rough, like someone sketched it during a boring lecture, and the notes just float there with zero fanfare. No rhythm game flash, no beat indicators, just a sequence of tones and the soft squish sound when you press a breast. That sound lives in my head now.
The difficulty curve is a brick wall wearing a smile. Short melodies are fine, you feel like a musical genius groping your way through Twinkle Twinkle Little Star. Then it throws a twelve note pattern at you and suddenly your memory turns to soup. I kept mixing up the left and right boobs, which in any other context would be a weird problem to have. The game doesn't punish mistakes with a game over screen, it just plays a flat wrong note and waits for you to try again. That patience is somehow more humiliating than a fail state. I wish the visual feedback was clearer when you hit the correct note, maybe a little jiggle or spark, but it's just the same squish regardless. Won't be changed, I'm sure.
There's something hypnotic about the loop though. Listen, fail, listen again, fail differently. My partner watched me struggle and said I looked like I was defusing a bomb made of hentai. The musical tag is generous, it's more of a memory test with a side of nudity. No story, no characters beyond the pair of breasts that serve as your instrument. Just you and the melody and the growing realization that your auditory recall is garbage. The notes screen shows your progress but I stopped checking it after a while, too depressing.