After a Kyowakai member is killed, detectives Shima and Hayami investigate the case, which is connected to recent unsolved murders. Kyowakai also launches their own investigation to avenge their comrade, intertwining their efforts with the police. The case involves a large organization framing Kyowakai.

Joji (Takashi Kitadai) is shot by Isamu (Hidemi Higa) and collapses. Ishizawa (Hiroto Honda) and Yamamura (Kenta Kawasaki) rush towards him and he flinches when they draw their guns, but Joji stops them. Concerned about the fate of Yuu and his friends, Joji decides to instead flee to Kawatani (Hitoshi Ozawa) and Himuro (Yasukaze Motomiya) in order to help them escape from the Masaki group.

"For us, gangs and yakuza don't matter!" A man who used to be a delinquent in Yokohama eventually becomes a leading figure in unifying Japan's yakuza society.

This is the side story (spinoff stories) to Nihon Touitsu.

After the young Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi) force a local yakuza family to disband, they leave Yokohama and head to Kobe where they meet members of the Kyowa Clan.

Under the command of the second generation leader of the Kawatani group, Himuro (Yasukaze Motomiya), the largest organization in Nagoya, the problem of the Shigemitsu family's heir is resolved, but the Hiroshima yakuza Genbukai and other groups of 12 organizations, the western Japan. be established. Shikoku, who became the vanguard, was invaded by Akashi, Hyogo, who is a Shinogi, by the Patriotic Giyuto, and Omoto, the head of Kyowa Kaisha, was killed. Burning with revenge, Himuro and Tamura (Yoshiyuki Yamaguchi) launch a violent counterattack.

Himuro (Yasukaze Motomiya), who joined Kyowakai, steadily rose through the ranks with his calm and clear mind. Tamura (Yoshiyuki Yamaguchi) was also released from prison and Ryuseikai was thought to gain even more power. At that time, there is an internal split in Kyowakai as a whole, caused by an unusual executive appointment, and Himuro and others get caught in the vortex. After the conflict, the leader of the Ueda group, Ueda (Okazaki Jiro) and other gang members withdrew from Kyowakai, create a new organization called Shintokai in Kyoto, and attack Kyowakai executives.

While the Kyowa Clan aims to unify Japan's yakuza after winning the war with the Shinto Clan, both Tamura and Himuro see unexpected faces in prison.

The Osaka War ended in a complete victory for Kyowakai and he finally conquered Osaka. The leader of the Yamazaki group, Kawatani (Hitoshi Ozawa), who was accompanied by Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi), was recognized for his achievements and appointed head of the Kyowakai family. With the Yamazaki-gumi steadily gaining strength, Himuro set about reforming the Yamazaki-gumi organization and established a regular business to make it even bigger. Meanwhile, a skirmish between the young men of Tamura and the Yanagase Federation breaks out again in a conflict that spreads throughout Gifu following the Osaka War.

A power vacuum left after the death of the Gijin Clan boss triggers new fighting in Shikoku, and Himuro (Yasukaze Motomiya) heads there to stoke the flames.

Himuro (Yasukaze Motomiya), who was appointed as the second Yamazaki-gumi wakagashira, expanded his influence in Gifu and Shiga, and even became known in political and business circles. However, he will bear a grudge against the Hiroshima mobster Genseikai. In the midst of this, Himuro and Tamura (Yoshiyuki Yamaguchi) are ordered by Kudo (Hakuryu), the leader of the Kyowakai, to intervene in the succession issue of the Shigemitsu family, the largest organization in Nagoya.

Akimoto's incarceration and the retirement of the Marugami Alliance chairman re-ignite tensions in Kanto, while Fukumoto makes a new move in the west.