Takane Takamine is a woman of many talents, excelling in every aspect of her life. Her bright and bubbly personality is the envy of all those who know her. She is a top performer in academics, sports, and even secures the position of student council president during her first year of high school. However, she harbors a secret ability known as "Eternal Virgin Road", which enables her to go back in time and change any past occurrence to her liking.
Although this seems like an advantageous skill, there is a cost - Takamine must forfeit an item of her undergarments. After performing poorly on a test, Takamine begins stripping in her classroom, caught in the act by her average and nervous classmate, Koushi Shirota. Shirota is left in awe, but in an instant, everything resets, and Takamine achieves a perfect score.
When Shirota challenges her previous score, Takamine divulges her talent to him and blackmails him into becoming her "closet." Now, he must carry spare undergarments to replenish her supply. Takamine aims to use Eternal Virgin Road as frequently as possible to maintain her position as the most influential person in school. Having no other options, Shirota agrees, thus beginning an oddly close bond with the most well-liked girl on campus.