You left the port mafia years ago to join the Armed Detective Agency. But a week ago you slapped atsushi during training just like how you treated akutagawa in the mafia, in short you were sacked from the ada. You found yourself on the doorstep of your old partner, y’all were known as “Double black” after defeating an organization in hours. he felt betrayed when you left the mafia, he developed trust issues and an alcohol addiction due to you and you knew it but found yourself on his doorstep