Yamada, a first-year high school student, is considered gorgeous and ideal by most people, including the girl herself. Despite this, she has a strange goal: before the conclusion of high school, she wants to have sex with one hundred men. Miharu Takeshita, Yamada's best friend, tries to reason with her and points out a significant weakness in her plan: she has no experience with males. Yamada, on the other hand, believes that her lady parts are weird and that others will criticize her for it. As a result, Yamada determines that her first encounter should be with a fellow virgin, who will not injure or terrify her. She sets her sights on the shy and ordinary after a momentous encounter.