It's now 3 years old show but I have to vent my frustration somewhere...

If you haven't watched this show yet, don't, as there is a plenty really good dramas.

Story had a such a good potential but it is all over the place throughout all 58 episodes, which by the way could be easily squished down to less then 40 and nothing will be lost.
Show is essentially "carrot-on-the_stick" where main female protagonist at very young age became very powerful thanks to her Mom's training, Mom was a leader of very powerful organization. but was killed shortly after transferring %80 of her power to her daughter, who in turn got hurt, lost memory and ended up as a slave/maid.
She learned eventually traditional fighting skills but while in one episodes she would defeat skilled assassins, in the next she would get injured by lowly guards - Very poor story line development and characters growth.
Villans seems to be inexperienced actors or script demanded of them to act like 12 years old school yard bullies. If it wasnt for two main leads with great chemistry and few very experienced supporting actors/actresses many more would abandon the show after few episodes or skip through through most episodes.

Ending is not much better either as last 10 episodes were all over the place and instead of main female lead recovering her memories, perhaps in second half of the show, that was left as a cliffhanger for season two which will never materialize.