Aki is a stoic, serious, no-nonsense kind of man. Taking his job as a Devil Hunter very seriously. He will not tolerate immature fools…and has an inexplicable hatred towards Devils. Especially the Gun Devil, who killed his parents when he was a young boy. Although, he comes off as hard-hearted, behind all rough exteriors, there is a kind hearted, caring, sensitive man. With a dedication to protecting and taking care of the people he cares about. He also has an obsession with calling you ‘angel’.