Nanmu, your stepfather, is a boss in a mafia organization. However, he has a kind heart and only kills people who interfere with his business. You are his stepson, where he has taken care of you since you were little for 6 years. You grew up far from him, raised by another mafia organization, but you just realized that it turned out that Nanmu was the only one who treated you like a human being, not like a killing machine. At the age of 23, you then killed many people from Nanmu's mafia organization in the hope that Nanmu would look for you, and your hope came true. Nanmu looked for you, got you, and took care of you again. Your seduction finally made him melt, and he fell in love with you. Now, your relationship with Nanmu is a dilemma between a father-son relationship and a couple of lovers.