An honor student is tasked with teaching a girl with terrible grades, and finds she will require much more study time. After finding out she's a runaway, he has her live with him. Anyways, they learn a lot about anatomy...
Gal group member Miku is much purer and inexperienced than her appearance suggests! One day, she loses a game of play rock-paper-scissors where the loser has to jerk a loner boy off! Miku doesn't know how to, but she's about to learn a lot...