Who Killed Sara?

**A few brief words to give you guys an idea if you want to get into this show or not....** Basically, a protagonist wants to take revenge on a rich family who may have killed his sister SARA and for framing him for her murder. 5 Episodes in and protagonist does nothing besides giving warning to family in pilot, all he does is plays scene of her sister dying in his mind in constant loop and making out with the daughter of same rich family. He says he has been planning the revenge for 18 years but we don't see any of his plan in work other than one powerpoint presentation in whole season. Every character in this series is horny for sex and that has made their relationships complicated and has unnecessarily stretched this story so far that WE STILL DON'T KNOW WHO KILLED SARA at the end of the season. Also, I have watched this subbed and I don't think most of the cast are very good at acting. 7.5/10 for acting.

This series has gone from fair to bad, the more it progresses the worse it gets. What a waste of time really.