Kenta Dan

Au lendemain de la Seconde Guerre mondiale, le parcours d'un jeune yakuza en rébellion totale contre la société qui l'entoure et même contre les règles établies par ses supérieurs hiérarchiques.

Mika Hino est une enquêteuse pointue qui appartient à la tristement célèbre "Gator Branch". Lorsqu'un membre du conseil d'administration d'une société commerciale est accusé d'être impliqué dans un pot-de-vin, Mika est chargé de le surveiller. Quelques nuits plus tard, sa cible est retrouvée morte à l'extérieur de son immeuble de bureaux de 30 étages. Avec une note de suicide apparente comme preuve, la police locale conclut l'affaire à un suicide. La mission de Mika s'est peut-être soldée par un échec, mais sa mission ne fait que commencer...

Cherry blossoms are in full bloom. It is time for college students to go on a drinking spree under the cherry tree - It's "Hanami" time! Two freshmen and a sophomore are ordered to stake out a spot for the entire pep squad. Plans are initiated from the night before; three of them have to pull an all-nighter. Once the night falls, the sky turns pitch black. Rival pep squad of the Roka College emerge from the darkness and an all-out turf war begins.

Life in the pep squad is all about harsh discipline. Seniors are "Gods", juniors are "Humans", sophomores are "Slaves" and freshmen are treated like "Trash". One sunny day, two freshmen are entrusted with the task to dry out the squadron's flag; the most cherished and symbolic item of the squad. When they accidentally burn a hole in the flag with a cigarette, they blame Aota. Aota attempts to take full responsibility by committing "harakiri", but changes his mind during the process – a deep stab to the stomach has inspired him with a better idea.

“Get them all – girls, school credits, money – without an effort!" These are the rumors that freshman Hachirota Kawachi heard about the pep squad; his reasons for instant enrollment. Hachirota may fall a few screws short of a hardware store, but when it comes to yakuza ties, he has plenty. He is the direct descendant and heir to the notorious Akushin-kai gang. Although this was enough information to keep the pep squad seniors quiet, it’s not quite enough for Aota.