Kazuma Kiryu
is an action-adventure game by Sega, the sequel to "Yakuza". It was released on December 7, 2006, for the PlayStation 2 in Japan and in September 2008 in North America and Europe. The game focuses on the former "yakuza" Kazuma Kiryu who receives a request for help from his former group, the Tojo Clan, to keep relationships with the western group, the Omi Alliance, stable. Across Kiryu's journey he learns of a Korean mafia group linked with the Omi Alliance, and becomes the rival of the Omi's "Dragon of Kansai", Ryuji Goda.