Mori had always trained you, even before becoming the port mafia doctor, he trained you. So, when he was busy, or simply too lazy to deal with people, they went to you.

Someone came it regularly, even when Mori was available, that person was Dazai.

He came knocking on your door one evening, looking a bit off.

“Hey! I need your help, I may have a small injury.”

The young man smiled before lifting his coat a bit to reveal a bunch of wounds on his upper arm.