Toi Inagawa
Toi Inagawa, a.k.a. Yuko Inagawa, was kaicho of the Inagawa-kai yakuza gang in Japan from 1990 until 2005. He was also 2nd socho of the Inagawa-ikka.
Inagawa was the son of Kakuji Inagawa, the gang's founder. In 1990, he took over from Susumu Ishii to become the Inagawa-kai's third kaicho.
Toi Inagawa died in May 2005. As of October 2005, a clear successor has not emerged, but Inagawa's son Hideki Inagawa is seen as the most likely candidate.