A "side story" film centered on Onaga Terukuni (Kyan Yutaka), the Captain of Yuusei Group, a subsidiary of the Kawatani Family. A legendary assassin is released from prison, and Teru is charged by Himuro (Motomiya Fujikaze) and Tamura (Yamaguchi Yoshiyuki) to welcome him back. But who he meets appears to be a senile old man who may need more help than he realizes ...
One day, when Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi) go to the office, they see cute animals. When They ask Ishizawa (Hiroto Honda) and Yamamura (Kenta Kawasaki) about the situation, they learned that a drunk Joji (Takashi Kitashiro) had bought it for them.
Nakajima invested all his money in stocks. However, these shares turned out to be worthless. Nakajima, who urgently needs 200,000 in a week, is determined to return it, but...
A message arrives on Himuro's smartphone from his son Yuta, who is now a high school student. Himuro stares at the message with a startled expression. The message is a single word - Revenge. Then, there is a picture of Yuta, gagged and staring resentfully at the lens. "A school trip to Taiwan... Revenge..." Himuro assumes that the remnants of the "Black Dragon" who killed Kaku and his friends in Okinawa have kidnapped Yuta to take revenge on him, and immediately decides to go to Taiwan to rescue his son.
There was a burglary at the Yusei-kai Kazo branch. Fortunately, the money had already been moved from the safe, but Teru (Yutaka Kiyatake) is in shock. He kicks out Sakuragi (Takuma Sugawara) and others and locks himself in his office. Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi) are worried about Teru's strange behavior, but there is something that Teru must get back...
Shizuya (Ito Kentaro), the only son of the Kanto region’s largest gang, the Shinshu Clan, which he hates being associated with, works instead for a design company. He works diligently while developing a liking for his strong-willed colleague Akino (Kakei Miwako), but when his father is shot and killed, the battle for succession intensifies. Peaceful lives are transformed.
Yamamura (Kenta Kawasaki), who has been an otaku since his school days, tries to hide his hobbies even during his time with youth gangs. One day, he falls in love at first sight with a transfer student, Akiko (Kazusa Okuyama), but it ends in heartbreak. Time passes, and Yamamura, Joji (Takashi Kitadai), and Ishizawa (Hiroto Honda) head to the Yamazaki family's regular meeting.
Himuro (Yasukaze Motomiya), Captain of the Kyowa Clan and Tamura (Yoshiyuki Yamaguchi), the Chief of Headquarters, are arrested on suspicion of assault. Sakaguchi (Takashi Kitadai), the fourth leader in the Yamazaki Family, and other members of the group scramble to prove their innocence. In doing so, they discover the existence of a gold smuggling ring and an international espionage organization behind the case.
After a civilian factory manager of a fishery is gunned down, Himuro (Motomiya Yasukaze) and Tamura (Yamaguchi Yoshiyuki) are tasked to investigate the strange circumstances by the Kyowa Clan Chairman (Ozawa Hitoshi) and are sent to Hokkaido. The pair and their Yamazaki Ichimon men travel around the Hokkaido with the help of the factory manager's estranged son, Hiroshi (Kuriyama Wataru), unearthing a series of leads involving old Cold War regrets and international crime, all while repairing broken families ...
The third spin-off that focuses on the members of the "Yamazaki clan" who are active in the popular chivalry series "Japan Unification." The "Yamazaki clan" is a group of popular characters who are known for their "unification of Japan" and are made up of the main members of the unique Chiyokai, centered around Himuro and Tamura.