In order to protect his sworn brother Nishikiyama and his beloved woman Yumi, he volunteered to replace Nishikiyama and bear the crime of killing the boss of his group, and then served ten years in prison and returned to Kamurocho. The protagonist, Kiryu Kazuma“, and in order to findMysterious girl encounter with mother.

This girl's name is ”Haruka%. At the same time, she holds key information on the whereabouts of a sum of 10 billion yuan related to Tokyo's largest gang, the Tojo Club, and the whereabouts of which are unknown. Therefore, all forces are fighting for this money.Eyes on this girl.Kiryu, who fought to protect Haruka, also began to search for the meaning of human life during the battle.

In 1995, Kazuma Kiryu and his friends, desperate to escape their restrictive lives, planned to rob a local arcade game store.However, this arcade shop falls under the jurisdiction of the Dojima-gumi, the gang organization that controls Kamurocho.

At the same time, in 2005, Kiryu, who was about to be released from prison, learned from Detective Date that his friends were in danger, and decided to return to Kamurocho to protect them.

In 1995, Kazama, who runs the Himawari Orphanage, originally hoped that Kiryu, Nishikiyama, Yumi and Miho could live a normal life.But things went counterproductive, and all four eventually joined the gang.

At the same time, in 2005, the tense relationship between the Omi Alliance and the Tojo Society approached a boiling point due to a 10 billion yen robbery.

In 1995, the Dojima group approached Edgar's sister, who had the seal needed to sell Edgar's land.At the same time, Yumi goes to Osaka to find her long-lost sister.

During this period, the battle over Edgar's seal intensified.In 2005, Aizi suddenly disappeared, leaving behind her daughter Xiaoyao.Kiryu and Yumi decide to protect Xiaoyao, but they soon discover a shocking secret.

In 1995, overworked Miho fell seriously ill.Jin fell into Dojima's trap because he was worried about his sister's condition, and was manipulated and exploited by the latter who took advantage of his weakness.

In 2005, Kiryu and Yumi continued to search for their missing son in Osaka, and met Goda, the president of Omi United.Goda forced them to promise to return the 10 billion yen before midnight the next day.

In 2005, in order to avoid a war between the Tojo Society and the Omi Alliance, Kazama took the initiative to meet with Chairman Goda of the Omi Alliance.At the same time, the grudge between Kiryu and Jin ten years ago resurfaced, making the relationship between them even more tense.

In 1995, in order to raise money for Miho's surgery, Kiryu won consecutively in underground boxing matches, and finally ushered in a high-stakes championship match.

In 1995, the deep family-like relationship between Kiryu, Nishiki, Yumi and Miho finally tragically broke down.

In 2005, can Kiryu and Yumi prevent the war between the Tojo Club and the Omi Alliance? How can the ten-year grudge between Kiryu and Ajin be resolved? What is the true identity of the Shinjuku Devil? As the situation becomes increasingly tense, they willThe final battle comes in Kamurocho.