Eternally His (Dazai Osamu x Reader)

Dazai Osamu, a now member of the Armed Detective Agency, is trying his hardest to become the man Odasaku wanted him to, to be on the side of good, but when he crosses paths with an old time lover, whom has changed so much since their last meeting, how will the detective react? I do not own Bungou Stray Dogs, the chara...