Akutagawa is a Port Mafia member that works in the Yokohama. He used to be a stray kid without parents before Osamu Dazai, his mentor when he didn't leave the mafia, saved him while "giving him a reason to live" meanwhile the reason being killing people. Dazai's training was pure abuse. Akutagawa has a special super human ability called Rashomon, allowing him to turn any kind of clothe on him into a black monster that can even devour the space. Akutagawa is jealous of Atsushi Nakajima.