In 1995, Kiryu and his friends attacked an arcade store owned by the Dojima Group. 2005, Nishiki, who grew up with Kiryu, is now the head of Dojima Group. Yumi is New Serena's matriarch, and Kiryu serves time in prison. When the slush fund of the Omi Union, the largest Yakuza organization in Japan, gets robbed, a reluctant Kiryu returns to Kamurocho to protect the people he cares about most.

1995 - Kazama, who runs an orphanage, hoped Kiryu and the others would lead an honest life. However, contrary to his wishes, Kiryu, Nishiki, Yumi, and Miho fell into the world of the Yakuza. 2005 - the Omi Union and the Tojokai are locked in a tense situation over the ten billion dollar heist while “Demon,” the mysterious assassination organization, plays a secret role in Kamurocho.

1995 - The Dojima Group hunts down Edgar's younger sister, Alice, entrusted by the late Edgar with the seal necessary for land sales. Meanwhile, Yumi goes to Osaka in search of her older sister, Aiko. 2005 - Aiko's disappeared, leaving her daughter Haruka behind. Kiryu and Yumi decide to protect Haruka's life, but Oishi and Aiko still hang out. Did the two collude and rob the Omi Union?

1995 - Miho, overworked due to being an unfamiliar hostess, falls ill. Requiring a massive surgical fee, Nishiki, who thinks about her younger sister, is at the mercy of Dojima's strategy to take advantage of her weaknesses. 2005 - Kiryu and Yumi search for Aiko in Osaka. They meet Chairman Goda of the Omi Union, who makes them promise to return the ten billion yen by midnight the next day.

2005 - Kazama meets Chairman Goda of the Omi Union to prevent a war. Kiryu and Yumi find out where Aiko is. The fraught relationship between Kiryu and Nishiki ten years ago surfaces again. 1995 - Kiryu, who continued his winning streak in underground martial arts for Miho, finally ascended to the Imperial Battle. Dojima plans to make a big profit in the match between Kiryu and the Emperor.

1995 - The relationship between Kiryu, Nishiki, Yumi, and Miho, who had helped each other like a family, collapses miserably. 2005 - Will Kiryu and Yumi deliver the promised ten billion yen by midnight to stop a war between the Tojokai and Omi Alliances? How do Kiryu and Nishiki resolve their differences? Who is the devil? With a sense of tension, they face the final battle in Kamurocho.