Asuka is an ordinary high school girl who is passionate about two things: Judo and Kujyo-senpai. She finally builds up the courage to express her love for Kujyo-senpai, but before she can do so, a boy from her past arrives at her school and challenges her to a judo match. If he wins, Asuka must be his girlfriend for three months. Who is this mysterious boy? Will Asuka find an opportunity to confess her feelings to Kujyo-senpai? The outcome of this match remains uncertain.