Minami mistakenly kills a gangster associate of his named Brother. Almost as soon as the murder takes place, the body of the deceased man is gone, prompting Minami to conduct a search. While looking, he finds a mysterious isolated hotel where he decides to take a rest. Not only are the front desk clerks a bit strange, but even the ambiance feels unusual. Minami soon realizes he may have gotten more than he bargained for.
The fourth part in the series "Code Between Brothers". The story takes place in Fukagawa, Tokyo, at the beginning of the Showa era, where five players following the harsh path of a knight defeat a despicable Yakuza gang.
As sadomasochistic yakuza enforcer Kakihara searches for his missing boss he comes across Ichi, a repressed and psychotic killer who may be able to inflict levels of pain that Kakihara has only dreamed of.
Ryūichi and his small gang of Triad vie for control of the Japanese underworld in a crime-ridden Shinjuku quarter while Detective Jojima tries to bring it down.
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.
Zen, an autistic teenage girl with powerful martial arts skills, gets money to pay for her sick mother Zin's treatment by seeking out all the people who owe Zin money and making them pay.
Narumi has decided to retire from the underworld society with which he has been involved for 20 years. He also informs his colleague and attends his final smuggled handgun deal. Suddenly, shows up and the client is shot to death accidentally. That client was an undercover police investigator, so Narumi is now facing a predicament.
Shiratori Tatsuhiko works as a scout for Burst, a talent agency in Kabukichō, Shinjuku's red light district. In a business where money means everything Tatsuhiko finds himself in a constant struggle between rival talent scouts and the yakuza.
The most notorious househusband in history appears!! The sinister yakuza who left behind many legends in the underworld, "The Immortal Dragon". He washed his hands of the yakuza lifestyle, and the new path he chose… was "househusband"! In the never-before-seen narrative, "Tacchan" charmed living rooms everywhere. And now the "ultimate spokesman for housewives (and househusbands) everywhere,"the Yakuza Househusband, returns!
A submissive hooker goes about her trade, suffering abuse at the hands of Japanese salarymen and Yakuza types. She's unhappy about her work, and is apparently trying to find some sort of appeasement for the fact that her lover has married.
Two contract killers cross paths in the middle of the same job and realize they are childhood friends. Together they take a break from killing and visit the small island they once called home. After reflecting on their past lives they decided to team up and use their talents in killing for good... much to the upset of the crime syndicates.