Mild‑mannered Koushi Shirota is left utterly stunned when he watches the flawless student council president, Takane Takamine, brazenly remove her panties before the entire class after scoring an unexpected 98% on a test. Even more bizarre, that imperfect score instantly turns into a perfect 100% right before his eyes. Determined to verify the event was real, he confronts her.
Unfazed, Takamine tells him she possesses a power called Eternal Virgin Road that lets her erase any mistake by shedding a piece of underwear, thereby preserving her impeccable image. Since Shirota is the only one who knows this secret, Takamine forces him to become her personal "closet"—a bearer of spare panties—so she can repeatedly employ Eternal Virgin Road. With his already fragile resolve constantly tested, Shirota"s life turns upside down as he finds himself unnervingly close to the capricious student council president.
