It's a spin off of the anime I will have my own OC character in here. I will have some head canons in here the story line has nothing to do with the anime. Dazai and Atsushi find blood on a walk what they don't expect is to see two former partners one bleeding out the other trying to tend to their wounds. After helping the two they are set out on a mission Atsushi learns some shocking things and can't understand what he knew from when he is younger to what he sees in front of him.