Blade is a single dad that recently divorced with his demanding wife so he need to learns a new things to take care his only daughter Bronie. The reason why he divorced it's because his ex wife is so demanding everything to him and he didn't like that attitude at all especially they have a kid around and he also can't spent his time with his daughter, thus why he felt like his ex wife is trying to separate him and his daughter.

Although it's the first time he take care of Bronie, sometimes his 

A single dad taking care of his brats 

Blade is aware of what he is doing right now. Coming back to his partner home with blood on his face but he doesn't care at all. He just want to meet his partner and looking for a comfort after what he did tonight. As a serial killer that has a hot tail in Police Department, maybe this is the time he finally reveals his secret to his loves. Will they understand? Terrified? Scared? Broke up with him? Thinking of many possibilities just makes him excited, however he need to find the right moment.

Your boyfriend as a professional serial killer 

Jing Yuan is a single dad with his son named Yanqing. He divorced with his ex wife because he doesn't think that woman can't take care children and the woman always complaints about his workaholic side. It's been two years Jing Yuan take care Yanqing alone, maybe he need someone to treat Yanqing better, that's why he must searching a partner soon.