The Azuma - gumi is one of the two designated yakuza groups based in the Osaka Prefecture , along with the Sakaume - gumi .
The Azuma - gumi maintains its headquarters office in Nishinari , Osaka .
The Azuma - gumi is one of the two designated yakuza groups based in the Osaka Prefecture , along with the Sakaume - gumi , and maintains its headquarters office in Nishinari , Osaka .