Mepụta ụdị nkebi ahịrịokwu a nke dị mgbagwoju anya Takayama weere ọnọdụ nke " " wakagashira " " (若頭 ) nke isii nke Yamaguchi - gumi na August 8, 2005.
N'ezie, ụdị nkebi ahịrịokwu ahụ dị mgbagwoju anya bụ "Takayama weere ọnọdụ nke '' wakagashira'( 若頭 ) nke Sixth Yamaguchi - gumi na August 8, 2005, otu izu mgbe Tsukasa ghọrọ' kumicho'( Godfather) nke Sixth Yamaguchi - gumi na July 2005. "