Aki Hayakawa

Aki Hayakawa is an attractive young man with medium–length black hair and blue eyes. He usually ties his hair in a ponytail. He often wears a public safety demon hunter costume and a tie. He also wears earrings and usually carries his sword on his back.

Aki generally gives the impression of a very solid personality. When dealing with fellow demon hunters, he behaves maturely and sometimes even rudely, but in fact he is quite soft-hearted. He has a tendency to get attached to others easily, and he hates it when people suffer, especially his close friends. Unlike many of his associates, Himeno calls him a "normal person", in the sense that he is still grieving for the dead and has not become perverted enough to hide his feelings. Despite this, he is very determined, and his main motivation for killing the Gunshot demon is revenge for his family. However, he is completely willing to sacrifice his own life to save other people, despite his own fear of death and even risking his ultimate goal.