The leader of the Soryukai, Aoi (Takeuchi Riki), is cornered. His subordinate and brother-in-law, Yuichi (Yusuke Izaki), has caused a violent incident, and the massive settlement demands are becoming a serious burden. At the same time, Yamanami (Ryu Kano), the secretary-general of the Kyoyu Alliance—of which Aoi himself serves as an executive—has begun dealing in forbidden drugs and encroaching on Aoi’s territory. Bound by the law and shaken by the organization, the true ninkyodo has long been lost. This is the story of one man who stood firm in the wandering world of the yakuza, upholding the path of chivalry to the very end.

Six years have passed since Tetsuo Sakuragi (Yasukaze Motomiya) became the Wakagashira of the Shimazu Clan. One day, Sakuragi becomes the target of an assassination attempt by Mamoru, the son of the disbanded Morita Clan's leader. Though Sakuragi is shot, his injuries are not life-threatening. Understanding Mamoru’s dire circumstances, Sakuragi chooses to let the matter slide. However, the incident throws the Shimazu Clan's headquarters into chaos. Meanwhile, Hidetoshi Kaji (Hitoshi Ozawa), the leader of the Koga Family, interrogates Shimazu Clan member Takuzo Katsuya (Yoshimi Tachi) and learns about Mamoru’s involvement. Determined to settle the score, Kaji storms the Matsuno Association, the group that inherited the Morita Clan’s remnants, but fails to locate Mamoru. Relentless, Kaji has Matsuno’s members monitored, tracks down Mamoru’s whereabouts, and ultimately abducts him...

The Shimazu Clan of South Osaka, a longstanding yakuza group, built its foundation in the port cargo handling industry and maintained its independence as a traditional gambling syndicate. Tetsuo Sakuragi (Yasukaze Motomiya) formed a brotherly bond with Kenichi Kanamori (Yoshiyuki Yamaguchi) while in prison and, upon release, began serving as an executive for the Shimazu Clan. However, after two police raids disrupted their gambling operations, Sakuragi interrogates a regular customer, Hirata, and uncovers that it was orchestrated by the Koga Family. Sakuragi and Kanamori confront Tatsumi (Takashi Shigematsu) at his office, who had been manipulating Hirata, but Kanamori is shot by a Koga Family member. The long-standing cold war between the Shimazu Clan and the Koga Family erupts into full-blown conflict...!!

The third-generation Shimazu Clan leader, Tetsuo Sakuragi (Yasukaze Motomiya), arranges a meeting with Kenichi Kanamori (Yoshiyuki Yamaguchi), but Kanamori refuses to listen. Hidetoshi Kaji (Hitoshi Ozawa), the head of the Koga Family, takes matters into his own hands and eliminates Natsuo Hiroshige (Eiichi Furui), a former member of Shimazu’s Shinseikai faction, who was secretly working to link Kanamori with the Ichikō Alliance. As Sakuragi and Kaji struggle to address the Kanamori issue, Kanamori’s ties with the Ichikō Alliance deepen, leaving Sakuragi on the verge of giving up. Amidst discussions of Kanamori becoming a sworn brother to Shingo Ōtatsu (Yoshihiro Fujiwara), the Ichikō Alliance’s headquarters chief, Sakuragi sends assistant underboss Naruhide Funaki (Yuma Ishigaki) to infiltrate Kanamori’s group. Funaki desperately tries to prevent Kanamori’s alliance with Ichikō but ultimately reveals a certain truth to Kanamori that changes everything…

As the Heisei era nears its end, the Shimazu Clan's second-generation boss, Yumizo Tokuma (Ryuji Katagiri), suffers a fatal stroke, triggering a power struggle. A succession battle erupts between Wakagashira Tetsuo Sakuragi (Yasukaze Motomiya) and Saiko-komon Kippei Hagiwara (Kazuyoshi Ozawa). Hagiwara's faction aligns with the Kanto-based Ichio Federation to block Sakuragi from becoming the third-generation boss. Targeted for assassination and detained by police, Sakuragi faces escalating conflict. The feud claims lives, including members of Hidetoshi Kaji's (Hitoshi Ozawa) Koga Family. Remembering Tokuma's wish to avoid internal bloodshed, Sakuragi withdraws from the race, vowing to step away. Yet, his decision may not bring an end to the turmoil...

The Shimazu Clan's internal conflict over succession spirals into a full-blown war, pitting the traditional Miwa Clan, backing third-generation boss Tetsuo Sakuragi (Yasukaze Motomiya), against the Shinseikai faction led by former Saiko-komon Kippei Hagiwara (Kazuyoshi Ozawa), now aligned with the Ichio Federation. The feud escalates, engulfing Osaka’s two major yakuza factions and threatening to consume the entire region. In the midst of the chaos, Sakuragi takes an unexpected action to bring an end to the conflict…

The battle for life begins now; who will survive? A clash that transcends the boundaries between police and the yakuza.

'Laws of Yakuza' sequel.

The fifteenth 'Conquest' film.

The sixteenth 'Conquest' film.