Two enemies from opposing sides, the ADA and PM, had been forced to go on a mission by the infamous suicidal detective; Osamu Dazai.

You greatly despised this idea at first. However, you decided to reluctantly just went along with it since there's nothing else you could do about it.

Though, Atsushi Nakajima didn't seem to mind the mission he was going with a member from the Port Mafia—it seemed like he wanted to end it quickly so he could get away and probably not end up dead by you.