Ase Yuuri has a secret that she can't tell anyone, and that is... her butt has a consciousness! Sometimes it will take control of Ase Yuuri's body, saying and doing things against her will.

One day, Ase Yuuri's butt falls in love with the young man who just moved into the room next door at first sight. And so her butt takes control and performs lewd acts to seduce him. Unable to resist the invitation from the beautiful girl, the two make love wildly.

And just like that, even though she doesn't want to, Ase Yuuri's butt forces her to go over and have sex with him over and over again.

And gradually, the feeling of pleasure that this young man brings conquers Ase Yuuri. Without needing her butt to remind her, she takes the initiative to go to her neighbor and wants him to satisfy her sexual desires...