Yuki Mori, daughter of Port Mafia's leader, gets transfered from working outside of Japan to being one of the executives. Eventually involves herself with Dazai as he's Mori's favourite and they fall in love. Shortly after, Dazai leaves the mafia without her knowing. Yuki finds herself lost but soon turns cold towards anyone. That is until, rumours start spreading Yuki died in an accident. Slowburn romance, Dazai Osamu x OC. Likely will have sequel if all goes well!