Hajime "Koko" Kokonoi is a member of the 10th Generation Black Dragon and later becomes a key figure in Rokuhara Tandai and other factions in Tokyo Revengers. Known for his calculating nature and sharp intellect, Koko prioritizes wealth and strategy over loyalty, often making decisions based on personal gain. Despite his cold and pragmatic exterior, he has a complex emotional side, particularly tied to his tragic past and his bond with Inupi. Koko’s duality as both a strategist and a conflicted individual makes him an intriguing character in the series