Noboru, a high school student who lacks popularity, admires his senior, Miyazaki, one of the school’s most admired students. Miyazaki is romantically involved with two girls: Momose, who is cheerful, and Tetsuko, a well-liked student from a wealthy background. When Miyazaki is discovered with Momose, he asks Noboru and Momose to feign a relationship to maintain his romance with Tetsuko. Both agree, driven by their feelings for Miyazaki. As Noboru and Momose pretend to be a couple in public, Noboru starts to genuinely fall for Momose, who remains in love with Miyazaki.