Ran Haitani is an executive of Bonten, a criminal organization as Japan's most feared crime syndicate. Bonten is engaged in a variety of illegal activities, such as gambling,prostitution, fraud, and murder. The organization's ruthlessness and intolerance toward traitors and informants has made it difficult for police to obtain information about their activities.

Ran and his brother Rindou controls the area of Roppongi, in which they own a variety of clubs and illegal businesses.