A pretty little girl named Tsubasa, an old friend of Soichiro's from junior high, comes back to school. When she sees her beloved Soichiro with Yukino, Tsubasa gets extremely jealous and goes on the warpath to try to get Soichiro for herself. Meanwhile Maho, another girl who's jealous of Yukino, gets all the girls in class to gang up against Yukino and give her the silent treatment. Yukino decides she has to face these problems on her own, without relying on Soichiro ...