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.

Horigai spends her boring days waiting to graduate from college. As she hangs out with friends, she begins to realize the violence and sorrow behind their ordinary lives.

Fists fly when Oya High’s street fighters defend themselves from a three-school alliance of brawlers.

Ishimori Uka is very shy and has a hard time making friends. When she was a middle school student, students made fun of her by calling her "stone". Around that time, she met Miura Kai with lemon color hair. Because of him, she entered the same high school. Uka now wants to overcome her shyness and have friends. Kai is a popular student at the school, but he doesn't talk much or seem interested in others. He doesn't know why, but he becomes concerned with Uka. Uka has admired Kai, and she now has feelings for him. Kai has a secret, which no one knows.

In order to turn their lives around, three taxi drivers living at the bottom rung of society hatch a plan to steal an invaluable art piece. Their plan was supposed to be perfect, but as coincidences pile up it becomes clear that nothing is going to go according to plan.

Tarō is a vagabond, a wannabe, an urchin, and not what anyone would call mainstream. He does not care. Do not even ask him about his background or age. He would not know and he would not bother. The man meets two others and he begins to experience a new set of conditions.

In the treacherous frontier city of Samurai Town, a ruthless bank robber is sprung from jail by wealthy warlord The Governor, whose adopted granddaughter Bernice has gone missing. The Governor offers the prisoner his freedom in exchange for retrieving the runaway. Strapped into a leather suit that will self-destruct within five days, the bandit sets off on a journey to find the young woman—and his own path to redemption.

The street fighters of Oya High and the delinquent brawlers of Housen Academy face off against each other when both seemingly attack each other.