Wikipedia
Kyokuryū-kai
The is a yakuza criminal organization based on the Okinawa island of Japan, with an estimated membership of 210–270.
Headquartered in Naha, Okinawa, the Kyokuryu-kai is one of the two designated yakuza groups in Okinawa Prefecture along with its splinter group Okinawa Kyokuryu-kai, and had been Okinawa's largest organized crime group since 1983 until 1990 when the Okinawa Kyokuryu-kai broke away.