An incident occurred where a member of the Sannokai who sparked a dispute at the gambling house was shot dead by a member of the Umeyama group dividing the place. This is the beginning of the "Osaka War" that shook the world of Japanese gangsters.
Kentarō Shimizu
Shōhei Yamamoto
Tamotsu Ishibashi
Takeshi Yamato
Takahashi Kazuoki
