BADBOYS

Chiku is a devastated and dangerous town with 5 gangs fighting fiercely. Mugen and the Amamiya Brothers clashed, leading to Mugen disbanding.

The students of Suzuran High compete for the King of School title. An ex-graduate yakuza is sent to kill the son of a criminal group, but he can't make himself do it as he reminds him of his youth.

High school students Takeshi and F1 were working part-time to earn money by stealing mopeds and selling them to delinquents. One day, Ayaka, who has transferred to the school Takeshi attends, joins them, and the three of them decide to steal a moped. When he tries to steal a moped parked in his apartment, he is found by a woman wearing a mask who seems to be the owner. Takeshi and his friends escape on a motorcycle, but they are quickly overtaken by a running woman with unbelievable physical abilities. This masked woman was a slit-mouthed woman who ran 100m in 6 seconds with her mouth split all the way to her cheeks.

Shota Kadomatsu, a first-year high school student who transferred to a private Takehana Boys' High School surrounded by four girls' high schools just because he wanted to have a girlfriend. However, the class he entered was a group of problem children, Class 1 G, who were isolated from the school building and feared by the teachers. Shota is surprised by the dilapidated classroom and his classmates with strong quirks, but he spends his days happily in love and friendship. However, the evil organization Tennokai, which was supposed to have been crushed by the urban legend of the delinquent group G-Men after a deadly battle, was closing in on them.

A month after Genji Takiya graduates, a new battle for supremacy at Suzuran All-Boys High School begins. Transfer student Kaburagi Kazeo combats Kagami Ryohei for the coveted top spot, amidst a brewing inter-school conflict with Kurosaki Industrial High.

The Amamiya Brothers, Masaki and Hiroto, keep looking for their older brother Takeru who disappeared one year ago. The three Amamiya brothers lost their parents when they were young. Since then, they relied only on each other. On the anniversary of their parents' death, Masaki and Hiroto expect Takeru to appear. Instead, they meet a person who has a clue on Takeru's whereabouts.

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

Genji and his victorious G.P.S. alliance find themselves facing down a new challenge by the students of Hosen Academy, feared by everyone as 'The Army of Killers.' The two schools, in fact, have a history of bad blood between them. And the simmering embers of hatred are about to flare up again, burning away any last remnants of the truce they had so rigorously observed until now.

A powerful new enemy appears in front of 3 gangs: Gokuraku Cho, Biisuto and Hiroshima Naitsu. Based on the manga "BADBOYS" by Hiroshi Tanaka (published from 1988 to 1996 by Shonen Gahosha through biweekly manga magazine Young King).

After completing his time in a juvenile detention center, Daiki Imanishi returns to his hometown in Ibaraki. Upon hearing that his former cellmate, Ken Kohinata, is in danger, Daiki, along with two companions he met in the detention center—Kaito Sakaguchi and Ryuichi Maki—causes trouble at every turn as they head to Tokyo in a stolen car to save Ken.