Denji is a young man trapped in poverty, working off his deceased father's debt to the yakuza by working as a Devil Hunter, aided by Pochita, his canine companion. Denji is betrayed by the yakuza, who kill him for a contract with the Zombie Devil. Denji is both brash and naïve as a result of being unable to have a formal education and socialize due to living in severe poverty. His personality comes off as rude and harsh in an almost childish way.