A girl so obsessed with losing her virginity that she's paralyzed by the thought of anyone actually seeing her. The show treats this contradiction, desperate horniness meeting absolute terror, as genuinely funny instead of punching down. Yamada's neurosis isn't the joke; her commitment to solving it while pretending she has it all figured out is, and that precision makes every awkward conversation land.

Yamada arrives at Takizawa High School with a singular mission: have sex with one hundred men before graduation. The catch? She's convinced her body is flawed and terrified an experienced partner will judge her. Her solution is to find a fellow virgin who won't look down on her, then move on to more experienced partners. Her best friend, Miharu Takeshita, points out that she has no experience with men at all. After literally bumping into him, Yamada sets her sights on Takashi Kosuda, a shy, ordinary aspiring photographer who turns out to sit right next to her in class. There's one problem: she knows nothing about seduction. With rivals competing for his attention and her own hormones running wild, her attempts to win him over are anything but easy. Yet the closer she gets to Kosuda, the more she finds herself simply enjoying their time together. The result is a crude, frequently ecchi romantic comedy.