Aki Hayakawa (早はや川かわ アキ Hayakawa Aki?) was the deuteragonist of the Public Safety Saga. He was a Public Safety Devil Hunter working under Makima's special squad[1] who had contracts with the Curse Devil and Future Devil, and a former contract with the Fox Devil. During the Gun Devil arc, he was killed and possessed by 20% of the Gun Devil, thus becoming the host of the Gun Fiend (銃じゅうの魔ま人じん Jū no Majin?).