Sora is a high school student but feels virtually invisible at school. His friend Chuya does unpredictable and surprising things and has a completely different personality than Sora but they both like the same girl Kio. In their pursuit of her they take a stand against their school's unreasonable rules which require all students to have black hair -- and the object of their affection has brown hair and refuses to change it so she won't attend school. Based on the anime series of the same name.