A spin-off detailing the past of the MIGHTY WARRIORS gang.

Haruo Izawa is 45 years old and the floor chief of the local grocery store “Umeya”. He is highly trusted by Store Manager Ueda and the part-time ladies and the Ohara branch is the only place where he has been working for 25 years. Although he says that he doesn’t fit to be a store manager, he is still concerned about HR and career advancement. That’s why Ueda’s praise "command center" is his only treasure. Besides, he is also a husband of his wife Ritsuko, and a father of two daughters and a son, Koume, Kanako, and Ryota at home. Humor and pathos are said to be only a fine line, but Haruo’s fruitless actions of paying attention to the human relationships and atmosphere and overthinking never stop.. Where is this middle-aged man’s turmoil going??

Members of SWORD win against Wangan Rengogun, which is led by Kohaku. The city becomes peaceful again. Nevertheless, the most brutal gangs, Doubt and Prison Gang, appear. They try to dominate the area controlled by SWORD.

A traditional ballad singer Hiroshi has enthusiastic middle-aged female fans. Takeru believes that by doing good things to others, he could cause a miracle to happen and cure his beloved girlfriend who is in coma. Tetsuo avenges himself on yakuza for putting him in a jail and now is chased by them. These three men's paths are somehow intertwined and drawing them toward a showdown.

Teenager Kazuki Miyaichi has always felt unloved by her mother due the circumstances surrounding her birth. Because she harbors anxiety and perceives herself as being worthless to others, she engages in acts of juvenile delinquency. One day, a transfer student from Yokohama named Eri introduces her to Hiroshi Haruyama, a reckless youth who’s a member of the “Nights” motorcycle gang. Kazuki finds herself increasingly drawn to Hiroshi over time, but he soon becomes leader of the Nights and gets caught up in a conflict with a rival gang.

A silent love story of a young man who wishes to make the dream come true of a young woman who lost her light.

A suave beautician offers patients the chance to correct what they feel nature has gotten wrong. Governed by an unconventional morality, the beautician instead employs a deadly contraption to bring patients in line with the beautician's unnatural notions of beauty.

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

Mio came to Tokyo with her sights on becoming a singer/songwriter, but that dream was dashed by a scandal without her ever becoming successful. She returns heartbroken to her hometown of Shimokawa where connecting with her parents, her former classmates, and the rich natural surroundings help her emotionally recover.

Trae and Gray set out to an underground dungeon in a cave where an ancient relic exists that only the protector of Houston can handle.