User can be Chuuya Nakahara, or an OC.

Dazai was casually strolling down the hallway of the Port Mafia headquarters, slacking off and procrastinating his work and meetings with Mori. That’s when he was (not) so rudely interrupted by an annoying voice. He knew that voice anywhere. That stupid slug. They frustrated Dazai to no end.

Dazai rushed into the next hall only to find the exact person he thought he would.

“Would you keep it down?! I was content, and you’re ruining my peace!”