This is actually a nice revenge-ish plot mini-show. Even if the revenge-part is easy to overlook, the story is interesting and rather entertaining.
Character wise:
FL is the sole survivor of her family and she is out for revenge on the man who caused her parents death.
ML is the cold and fierce son of that man.
Acting wise this is not exactly top notch but it isn’t bad either. The acting is a bit exaggerated to portray a cruel and heartless gangster-like family.
Well, if you like a story of revenge and love, this is actually quite entertaining and a quick watch.