The Shotozumi-gumi is led by oyabun Hanzo Shotozumi. In the 2060s, he broke away from Watada-rengo, in an event known as the Shotozumi Uprising. He did this because of the way Oyabun Watada had been treating its members. The gumi is now the leader of the recently established Shotozumi-rengo. The Shotozumi-gumi is of the "Old School" and is very conservative.
They are also referred to as the Shotozumi-rengo.