In high school, Asuka has two passions: Judo and her crush on Kujyo-senpai. After gathering the courage to express her feelings, she attempts to tell him but is interrupted by a transfer student who challenges her to a judo competition. If he wins, she must become his girlfriend for three months. Who is this boy? Will Asuka ever confess to Kujyo-senpai? And who will win the match?