Asumi, a junior high school classmate, asks him to give him a prostate massage. As a gay man, Asumi who says he has never felt pleasure from behind, learns for the first time the pleasure of being fucked from behind by Yutani's professional technique.

Remembering his past love life where he was always focused on his partner. Asumi recalls his past relationships in which he was always focused on the other person, and says, “If only someone like Yutani was my lover."

Yutani, who has come to know the healthy side of Asumi, as Asumi's heart beats faster and faster, he realizes that he is in love for the first time...?