1. At the back of my mind, I always thought this entire show could have been avoided easily if someone talked to her about her dad or took care of her. Instead, she had a crap childhood and was bullied because of her dad's job and was even harassed by cops. Why was she not put under witness protection or something of similar nature? Several parts of the stort felt like it happened just for the plot. Such as: how the crime boss is supposed to be smart and out manoeuvred the police many times, but didn't predict the guy whose face he disfigured would come back for revenge. He let him go instead of killing him by following the chinese saying: "to cut weeds and eliminate the roots."
2. It was shown he easily killed people that betrayed him. Why was the female lead's dad so memorable that he got all sentimental at the end, just because he was an early member, who fought with him and was nice to him? His character is kind of all over the place, both psychopathic and willing to murder people in cold blood; willing to use anyone and everything to stay out of jail and continue his drug business which he cares about. But he is also sentimental and seems to care about the female lead? In the end, he was basically willing to die for her, taking bullets out of his gun. Or maybe he went full on Johan Liebert, in order to see if she would become like him and kill him and become a monster? If he really wanted the female lead to become someone who would never betray him, he should have just went after the police himself and provided her with full on fabricated evidence that the police chief did it instead of using her and risk being found out. That would have been the biggest revenge against her dad's betrayal , having his daughter view her her father's murderer as a friend or guardian, instead of using her as a mole and easily risking her finding out the truth.
3. The female lead is perfect at fighting, and never looses a single fight. I like a strong female lead, but when it's shown she is hardly buff or muscular at all, very pretty and feminine looking, and wrestles and takes down hallways of well trained men armed with swords while not wearing any sort of protective gear is rather unrealistic. Her acting is very good, and the action scenes are very detailed if not very realistic. I felt as if many parts of the plots happened just for the fight scenes and action and final climax, instead of the other way around. Like, the director wanted as many exciting fight scenes as possible.