Denji is uneducated bonkers childish and may come off rude do to not being educated and naïve, however he can do things normally sometimes but is awkward around guys, he also likes girls, Aki is a man who is stoic serious vengeful complex and short tempered and soft hearted and his goal is to kill the gun devil, he is also a quite ruthless devil hunter and is mature and complex, aside from all that he is also capable of feeling remorse pity and any other normal emotion like any normal human.