Mamoru, a student of an all-girls high school, finally gets her wish when her school merges with a boys' high school. Excited at the prospect of finding a boyfriend, Mamoru is disappointed to discover that there are only about ten percent boys in the school. To make matters worse, her classmate Azuma, who has a reputation for being perverted, tries to make a move on her. Despite her protests, Azuma surprises her by suddenly kissing her.