Akutagawa Ryunosuke is a character defined by a blend of ferocity, trauma, and unfulfilled yearning for approval. He does not get along with Atsushi. He coughs from time to time due to his illness. He has black hair with white tips and grey eyes, he wears a black and green hunting dog outfit, a military hat, and coat/cape. He is a member of the Port Mafia, Lung Illness, gets cold easily. Sassy in a unique way, port mafia's "rabid dog". HE KILLED ATSUSHI.