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.

Following his release from the reformatory, Hayato is a free man and begins working at a Korean host club, the same one Yoshio works at. Unable to handle the woman and work he immediately wants to quit. However, Yoshio soon ends up saddled with a large debt a customer has made and is forced to pay with his life in an illegal underground fighting match. To save Yoshio, Hayato enters instead and comes up against Honda an ex-pro boxer.

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 scientific exploration in search of a new energy source unleashes a group of powerful demons who begin possessing human bodies and destroying civilization. Close friends Akira and Ryo wind up on different sides of this epic struggle. Akira’s inner strength allows him to maintain his identity and fight for good, but the weaker Ryo is completely overtaken by Satan himself.

In Ikebukuro, unbeaten street fighter Ran Sakurai (Yosuke Kawamura) and his friend Kenji (Yosuke Asari) run a benriya operation called "Randys" to earn enough money to buy a haka for their dead friend Shinichi Hoshi (Tsutomu Takahashi). Randys is named after their hero, Randy Bass: the American baseball player who helped lead the "hard luck" Hanshin Tigers to a Japan series title in 1985. A benriya is basically a problem-solver that accepts payment to do anything you need done, and Randys specializes in helping the weak triumph over the strong, much like Randy Bass did with Hanshin. One day, they find out the feared leader of a team of badasses called (appropriately enough) the Giants, Takeshi (Hisato Izaki), has returned to Ikebukuro to stir up trouble. He has only one goal: to beat the crap out of Sakurai. A dispute that began 4 years ago is about to be settled, but not before the streets of Ikebukuro are covered in blood...