Everyone, even Yamada herself, would describe the first‑year student as stunning and flawless in the bustling corridors of their high school. Yet she is pursuing an unusual ambition: to have sex with a hundred men before graduation, hoping to complete this personal quest during her senior year.
Yamada"s close friend, Miharu Takeshita, tries to ground her thoughts and points out a serious flaw—she has no experience with men. Yamada"s hesitation stems from feeling that her genitals look odd and fearing judgment, so she resolves to have her first encounter with another virgin, believing they will not hurt or frighten her. A chance meeting leads her to target the shy, ordinary Takashi Kosuda, a budding photographer with a kind heart and gentle demeanor. She feels a mix of curiosity and excitement.
With other suitors vying for his attention and her own intense hormones, Yamada must devise ways to attract Kosuda and consummate their union. Yet as she draws nearer, she finds herself increasingly enjoying the moments they share, discovering that intimacy can be both thrilling and comforting.