Himuro is arrested on suspicion of assault. To prove his innocence, members of the Yamazaki Ichimon scramble to locate Ito—the older man Himuro once helped (Hiroo Otaka), who could serve as a key witness. Meanwhile, Tamura visits a certain hospital, where he is suddenly attacked by a man. After a fierce struggle, Tamura is arrested by police who rush to the scene. With the Kyowakai cornered and both Himuro and Tamura in jeopardy, the Yamazaki Ichimon splits up to continue their desperate search. Their efforts eventually lead them to Naomi (Saki Kiyoi), the daughter of Ito. As the investigation progresses, it becomes clear that the incident is tied to a gold smuggling operation. Just as the truth begins to surface, Naomi is kidnapped by the smugglers. The shocking mastermind behind the smuggling ring turns out to be an international spy organization. Can the Yamazaki Ichimon rescue Naomi—and clear both Himuro and Tamura of all charges?!

Shima (Mirei Kiritani) is a second year high school student. She has already become the youngest ever winner of a "new writer award" for poetry. Yet, she keeps it a secret that she is a writer at school. Shima has developed feelings for fellow second year high school student Kento (Takahiro Miura). One day, Kento confesses his feelings for her and they begin to have a relationship. Shima has difficulties understanding other's emotions and can't understand Kento's feelings. Soon afterwards, Kento decides to break up with Shim...

Ryuji (Tatsuya Kishida), inspired by Kawakami’s (Tatsuya Nakazawa) coolness, comes to admire him deeply. Kawakami, however, feels uneasy around Ryuji, burdened by a past trauma inflicted by a certain man. Himuro (Yasukaze Motomiya), Tamura (Yoshiyuki Yamaguchi), and Saito (Katsuya), who know Kawakami well, sense something is wrong. Their fears prove true when Kawakami reunites with his old nemesis, Apollo (Tomohisa Yuge). Convinced that Kawakami is Yokohama’s strongest, Ryuji becomes obsessed with forcing a one-on-one fight between Kawakami and Apollo. Can Kawakami finally overcome his past trauma…?

The Yamazaki Ichimon, gathered as usual at Himuro’s (Yasukaze Motomiya) office, pushes to expand the Kenyukai office for more comfort. Ishizawa (Hiroto Honda) finally decides to buy a building, but Yamamura (Kenta Kawasaki), tasked with securing funds, hesitates. Just then, Ishizawa receives a call from one of his twin sisters, Arisa, showing an unexpectedly gentle side—until his expression suddenly hardens. Claiming it’s an emergency, Ishizawa reveals the truth: his other twin sister Marisa (Marina Mizushima) is simply crying after a fight with her boyfriend. Brushed off by his doted-on sister, Ishizawa asks Yamamura to check on her instead. Meeting Marisa in secret, Yamamura learns about her relationship with Tommy (Ken Mizorogi)—only for Ishizawa to erupt, insisting Tommy is a dangerous killer, sending the situation spiraling fast…

Yamamura (Kenta Kawasaki), an anime otaku since his school days, hid his passion while living as a delinquent. Back then, he fell in love at first sight with transfer student Akiko (Kazusa Okuyama), only to be heartbroken. Years later, on the way to a regular family meeting, Yamamura, Joji (Takashi Kitadai), and Ishizawa (Hiroto Honda) stop by a café—where Joji and Ishizawa both instantly fall for the waitress, Akiko. Seeing the trio completely smitten, self-proclaimed love expert Nakashima (Yoshimi Tachi) offers to investigate her tastes, but secretly begins dating her himself. Determined to confess, Yamamura visits Akiko’s home, only to be met by her troubled expression. Behind it all is Horiuchi, a café regular who had always lingered on the edge of her world. Learning the truth, Yamamura races to save Akiko from her situation.

A burglary hits the Yuseikai Kazo branch. The cash had already been moved from the safe, but Teru (Yutaka Kyan) is left pale and shaken. He drives Sakuragi (Takuma Sugawara) and the others out and locks himself inside the office, worrying Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi). Teru, however, is desperate to recover something he cannot afford to lose. As Nakashima (Yoshimi Tachi) predicted, the thief returns. Teru lies in wait and tries to capture him, but the burglars—two agile brothers known locally as the parkour brothers—escape with ease. The elder brother Ichiro (Joey) fell in with a theft ring for a specific reason. Meanwhile, it emerges that the string of burglaries may be connected to Fujimura, a Marubo detective…

Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi) receive a request from their now-retired old patriarch, Mikami (Eiichi Furui) regarding harassment by the Chinese mafia on his ward, Oomiya Hayato. While Himuro and Tamura investigate, the Yamazaki Family kill time by dealing with merchandise fraudsters, YouTube streamers, and holding a seance to possibly consult the dead ...? Originally a 16-part "workplace comedy" online sketch series hosted on Rakuten TV, "Hiragana Ichimon" was released as a full movie cut on other platforms such as U-Next, while Netflix Japan retained the 16-part cut.

After wiping out the Kamome Church, Himuro (Yasukaze Motomiya) and Tamura (Yoshiyuki Yamaguchi) put the matter to rest. Himuro returns briefly to Kobe with Joji (Takashi Kitadai), reflecting on how Kobe has become home and on their violent past in Yokohama. Meanwhile in Kobe, a delinquent group led by Isamu (Hidemi Higa) and Nobumitsu (Takuya Negishi), reminiscent of the younger Himuro and Tamura, causes trouble in Masaki-gumi territory. Following Kawatani’s (Hitoshi Ozawa) orders, Joji visits Masaki-gumi with Ishizawa (Hiroto Honda) and Yamamura (Kenta Kawasaki), but is delayed by Masaki’s (Yoshiaki Umegaki) old-fashioned lecturing. Soon after, a Masaki-gumi member reports being robbed by Isamu’s group. Although Joji offers to help, he is turned away. Not long after, Isamu and his crew appear at the Masaki-gumi gambling den, threatening to ignite a new conflict.

Joji (Takashi Kitadai) is shot by Isamu (Hidemi Higa) and collapses. When Ishizawa (Hiroto Honda) and Yamamura (Kenta Kawasaki) rush in and aim their guns, Joji stops them. Wanting to spare Isamu and the others, Joji asks Kawatani (Hitoshi Ozawa) and Himuro (Yasukaze Motomiya) for permission to let them escape the Masaki-gumi. Masaki (Yoshiaki Umegaki) agrees, saying he will not interfere if Isamu comes under Joji’s protection. However, when Joji goes to meet them, Isamu and his crew have already fled. They escape from Kobe to Yokohama, where Kawakami (Tatsuya Nakazawa) and Ryuji (Tatsuya Kishida) keep a wary eye on the newly appointed Keihin Rengokai director, Sakagami (Yoshiki Kanahashi). In Yokohama, Isamu and his men form the Yushinkai and begin expanding their power by encroaching on Fujishiro-gumi territory.

Himuro (Yasukaze Motomiya), Tamura (Yoshiyuki Yamaguchi), and the Yamazaki family arrive in the northern land of Hokkaido. Before their arrival, Shimotsuka (Shinya Owada), the chairman of Shimotsuka Foods, had come to the Yamazaki family chairman Kawatani (Hitoshi Ozawa) in Kobe to consult about Hokkaido branch manager, Nishino (Takaaki Ito), who has been shot by an unknown assailant.