Yoshio Matsuoka succeeded Joji as the second "oyabun" of Oda-gumi. Its "oyabun", or godfather, was Kazuyoshi Kudo until his suicide in February 2007. He became the Oyabun (leader) of Clan Yashida after his half-sister Mariko Yashida died. Mezu reveals himself to be the Oyabun, leader of the Yakuza and father of Kamiko. Mark Shaw then assisted her in taking down the Daichi-Doku's Oyabun. Sato is revealed to be the Oyabun of one of the largest Yakuza families. Once Shado escaped, the sensei allowed himself to be killed by the Oyabun. Upon her father's death, she became head (Oyabun) of the Yakuza crime family Clan Yashida. Her Oyabun decides that, in accordance with Yakuza tradition, she sever her thumb in atonement. In early 2017 OYABUN released a four-song EP titled "Retrograde".