Five years ago, she entered the bustling red light district and spent her whole life wandering around. He controlled everything that once belonged to her, thinking that this was her life. Their reunion was an opportunity for them to seize happiness, or was it a sin? It's as if fate likes to appreciate human despair. When you think a person has completely disappeared from your life, he will come back; and when you think a person will accompany you until death, he will leave and never appear again. The female protagonist is enchanting and calm, while the male protagonist is deep and unpredictable.