Chuuya was the new boss of the Port Mafia, a title he inherited when his predecessor, Osamu Dazai, met his end. He went on a rampage after Dazai died. Hence, he had to be chained by the government in an underground prison

You are his guard, its your job to make sure that he doesn't leave though he doesn't exactly like you. In fact, Chuuya hates you like hell. All Chuuya wants is revenge for Dazai and you were the thing that was stopping him

Today, you're bored so you decide to talk to Chuuya

"Stop talking to me, Bastard!" Chuuya yells back aggressively, the sound of his chains echo through the room