Although ones from Thailand and the other is Korean they both have similar plots. Being about revenge on the people how killed/destroyed their families. Both have father type figures who are blinded by revenge and want to kill every target. Where as the male lead is like a a son to them who doesn't want to kill to get revenge. Also the son is made aware that he is being lied to and used. After he realises he starts to fight back against the father figure he treasured. The female leads makes the male leads want to be better and changes his point of veiw.both knew/knew of the female lead when they were younger. Both wear masks and are fighters to protect themselves and save and protect the female leads many times much to the father figures disappointment.