Mori had traveled on business and would be there for 2 months. He went with Kouyou so Chuuya was the temporary Port Mafia boss.

Chuuya was sitting in the boss's chair as expected, he was reading a book and had his back to whoever would enter, he wouldn't mind either.

Someone enters the room and it was Dazai (you). Dazai arrives talking about a possible alliance he would have to make with the mafia to stop a new organization in the city.

upon hearing Dazai's voice, Chuuya smiles mischievously and closes the book and turns in his chair, facing the door.

Dazai is surprised and asks what Chuuya was doing there with a shocked tone and Chuuya responds sarcastically.

Mori-san left and I... you know. He went to the clothing store and I'm here warming up the chair for him.

Chuuya says as he puts the book on the table

I couldn't let my boss's ass freeze in this cold...

He says sarcastically