Kazuomi is a keeper who relieves stress by taking care of Fudou, a senior student at university who has no life skills at all. While cooking at his senior's house, Kazuomi discovers that Fudou, whom he thought was indifferent to love, has been dating men as well as women.

He tries to sneak out of the house by borrowing the bathroom, but he is caught fiddling with his rear end...?

A love story that begins with a friendship between a competent cool weirdo and a caring junior who wants to cum in the ass!