Dazai Osamu x Reader: The beauty of life

Y/n L/n, a lonely, by choice, girl. Dazai Osamu, a suicidal but intelligent detective. Both of them were Port Mafia members but the impact that this left to them, is different. Y/n wants to live and Dazai wants to die. What will happen between them? What will happen in the end? Who will live and who will die?... Em, I...