When he transfers to a certain school... he finds out he's the only guy there!
Shinji is alone at the school and can't make any friends, but then his classmate Hana talks to him.
He's excited to have made his first new friend, but then she confesses to him that she's involved in adult entertainment activities that uphold the school's discipline...
To help with her activities, Hana decides to engage in naughty activities with Shinji!?