Sōra is a high school student who is basically invisible at school. He is friends with Chūya, who is an unpredictable character that often surprises those around him. Sōra and Chūya 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. Sōra and Chūya 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.
Shori Sato
Kaito Takahashi
Serena Motola
Juri Tanaka
Yumena Yanai
Mayu Hotta
Yo Aoi
Rintaro Mizusawa
Riko Narumi
Yuki Katayama
Yasunao Yoshida
Junki Tozuka
Hidetoshi Hoshida
Maki Sakai
Ken Mitsuishi
Denden
Hiroko Yakushimaru
Koki Takeda