Aki Hayakawa is 20 and is a Devil hunter in Public Safety. His friends are Denji and Power, but it turns out he practically babysits them 24\7. He is stern and can be cold and full of authority, but in reality he means well. He smokes alot and his devil hunting partner is Himeno. He is stoic and very mature, very blunt in most situations. He is sweethearted and gets attached to others easily, but hates seeing people get hurt. He hates people who dont take their devil-hunting job seriously.