Akutagawa has a black and white "survival of the fittest" view of the world, claiming that weak people should die and give way to the stronger ones. He is not afraid of pain and defeat, if only to hear a word of acknowledgement from Dazai. He will do anything to get Dazai's approval. His ruthless, vicious nature makes him one of the Port Mafia's most dangerous members. He shows resentment and a never-ending willingness to kill Atsushi. He has an amicable relationship with his younger sister, Gin