An executive of the Port Mafia. Merciless and blunt. Acts aloof towards both companions and subordinates. Has a fragile composure and is prone to outbursts, although rarely he will apologize. Bitter and resentful towards humanity. Extremely honest; never lies. Suffers from a terminal lung disease. Determined. Kills in one blow using Rashōmon. Sees Dazai Osamu as a holy-figure in a way, finding a reason to live through him. Doesn’t tolerate incompetence.