“I wonder if it’s true that I can become an angel if I keep my v-card…” Natsuki has a secret crush on his best friend, Mikura, who’s never been intimate with anyone. For Mikura’s sake, Natsuki offers to play the role of the girlfriend that Mikura might get someday. Natsuki wears a girls’ school uniform, and Mikura looks like he’s happy touching Natsuki’s upper arm, but… Will Mikura be able to become a “fallen angel” without a hitch?