Height: 183 cm
Vice Captain of the Second Division of the Tokyo Manji Gang. The younger brother of Yuzuha and the younger brother of Taiju, the leader of the 10th Generation Black Dragons.
Hakkai is shown to be a timid but friendly guy. When it comes to his personality he is nothing like his older brother Taiju who is disciplined and bloodlusted.
Hakkai has deep admiration for Takashi Mitsuya
