[1] Headquartered in the southern Fukuoka region of Omuta, the Kyushu Seido-kai maintains its offices in five other prefectures including Tokyo.

[2] Since its formation, the Kyushu Seido-kai has been known for its blatant armed conflicts with its former parent syndicate, the Dojin-kai,[3] involving various hazardous weapons such as automatic firearms (especially the AK-47), petrol bombs and hand grenades.

[8] The Kyushu Seido-kai ended up receiving official registration as a designated yakuza group under the Organized Crime Countermeasures Law on February 28, 2008.

[2] In 2008, the Kudo-kai's third-generation president Hideo Mizoshita died and his funeral was attended by many yakuza magnates representing their respective syndicates from all over the country.

[18] The Seido-kai was allegedly the largest drug trading division of the Dojin-kai, as rumored by some local Omuta in-the-know men, hence the informal dub name of the "Seido Pharmacy".