A heartwarming, yet bittersweet love story between a man seeking something in return and a woman who repays kindness with betrayal.

This film revolves around the perils of a dating app. A single woman is recommended an app, however the person she matches with is different to his photo. At the same time, a serial killer is stalking his latest victims also using the same app.

An unemployed man named Suzuki is taken in by police after breaking a booze vending machine. When he predicts the explosions of two bombs and claims there are more, the police start to investigate him as a terrorist. However, Suzuki first claims to know about the bombs through psychic clairvoyance, and then claims he was hypnotized to forget. He gives hints about the bombs with riddles while riling up his interrogators, especially senior detective Kiyomiya and his junior Ruike. Things seem to be connected to a disgraced cop named Hasebe, who committed suicide after a scandal some years ago. But is Suzuki actually the perpetrator behind the bombs or not?

Satomi Oka is worried about his final choir competition but is accosted by a shadowy gangster, Kyouji Narita, who demands karaoke sessions with him.

Hinata is murdered again by the Tokyo Manjikai Gang in front of Takemichi. In order to save Hinata, Takemichi travels 10 years back in time again. Takemichi has to change a key case that can save Hinata. The key case involves a sad incident that occurred to 6 men, who later formed the Tokyo Manjikai Gang.

Driven by a single-minded determination to protect his friends and save Hinata, Takemichi Hanagaki enters a gang war with the hope of altering the course of fate and creating a better future for everyone.

The stage of this work is Saitama, a suburb of Tokyo in the early Heisei period. Immediately after the bubble burst gangster countermeasures law, there were gangsters who defended the last territory and young people who freely controlled the city. The youth conflict escalated day by day and became a force that surpassed the yakuza, and the runaways were sent to juvenile prisons one after another, where exclusive rules awaited.