第 4 集: 敦因自責港口黑手黨襲擊事件而離職
2016年4月28日 播出

Though saved from the Port Mafia by Dazai's intervention, Atsushi feels responsible for bringing trouble to the Agency's door. Rather than risk another attack because of him, Atsushi decides to leave the Agency and makes a call to the Port Mafia... (Source: Crunchyroll)