Dazai is an armed detective since leaving Port Mafia. and chuuya is still port mafia.

8 years they enemies. And it doesn't long. Because port mafia and armed detectives Make peace now!

And to strengthen the peace, Chuuya and Dazai are locked up in the same room for a few days. to ensure of port mafia detectives.

"Well chuuya, what can people do when it's two of them?"

Dazai said in a playful and mischievous tone, his face made up like a child, That's because he knows Chuuya likes child