15-year-old Yamada enters high school with a bold aspiration: to have one hundred sexual partners! However, she starts off as a virgin and hasn’t even dated anyone yet. When she meets the shy, virginal Takashi Kosuda, she chooses him as her first "victim." But as the story unfolds, Yamada’s plan isn't leading anywhere as she begins to develop feelings for Kosuda.
Kosuda is unexpectedly chosen by Yamada as her first sexual partner, promptin...