25 years ago, the Nagiri Brothers—once feared nationwide—lost their family’s backbone when their father, Tsuyoshi Nagiri (played by Kim Sunjin), was suddenly assassinated. “Even as yakuza, we never strayed from the path of humanity. Everyone in the Nagiri family is our comrade,” were the words their father left behind. Carrying on his will, the second son, Kaname Nagiri (Choi Chul-ho), took over the Nagiri-gumi. However, just as the ex-Nagiri member-turned-politician Masashi Fukuzawa (Koichi Miura) is preparing for an election, and Danba Takeshi (Daisuke Nagakura), head of the Tanba-gumi under the same Doushinkai syndicate, is released from prison, a violent incident breaks out—triggered by the drug trade. When their youngest brother Minato (Seiji Fukushi), a respected figure in Osaka, falls into danger, the eldest, Shun Nagiri (Yoshiyuki Yamaguchi), steps in to save him. The brothers reunite and head to Kaname’s side—just as he’s about to clash with their former allies…

1990, a time before cell phones. Yusaku, an office worker, is living a peaceful and happy life with his girlfriend, Yukiko. One day, he receives an invitation to a class reunion from an old friend. Yusaku is reluctant, but the words "Minami's back in town" stir a memory deep within his heart. Yusaku and Minami once shared a secret that they couldn't tell anyone about. When the day of the reunion arrives, the lives of Yusaku, Yukiko, and Minami begin to change dramatically. (R18+ and R15+ versions will have different endings). (R15+ version premiered at the OP PICTURES+ Festival 2025).

Yukimi consults her friend Yuka about her affair with Mitsuru, a middle-aged businessman. Yuka's boyfriend Katsuya suggests that they punish him. The three of them go to Mitsuru's house, but things take an unexpected turn...