SÅra is a high school student who is basically invisible at school. He is friends with ChÅ«ya, who is an unpredictable character that often surprises those around him. SÅra and ChÅ«ya both have feelings for the same classmate, Kio Machida. The Machida girl refuses to come to class, because she doesn't want to dye her naturally brown hair black. Their school has unreasonable school rules, especially about uniforms, which include requiring all students to have black hair. SÅra and ChÅ«ya decide to stand up to change their school's black school rules so that Machida won’t have to repeat a year of school from missing too many classes.