Yukina Aizawa:
everything I love : magical powers, mystery , fighting battles

 Yukina Aizawa:
Hidden identity, suspence, combat, power

 Yukina Aizawa:
I love when people hide something

 Yukina Aizawa:
rythmes between serious scene and funny scene

 Yukina Aizawa:
please no too cheesy love stories, I know there almost always love story and if it write well , it's ok , I just don't want to have something focus only on love

Historical fantasy Cdramas with powers, combat, and hidden identities (but also lots of romance):

Kdramas with fantasy elements that have romance but it's not the sole focus of the whole drama:

  • Live Up to Your Name - Time travel. Good mix of seriousness and comedy. A little bit of hidden identity (due to the time travel element).  There isn't really combat (the leads are doctors) but there is a war going on in the historic times that the ML is from, and the ML does protect the FL from violence in modern times too. 
  • A Korean Odyssey - Modern fantasy. The FL is a human with special abilities and the ML is a demi god.  There are powers, fights and a little bit of mystery. 
  • Gu Family Book - Historic fantasy. The ML is half gumiho and the FL is a trained fighter. There are powers, fights and a little bit of mystery. 
  • W - Sci-Fi with a bit of crime / murder mystery. The FL has to hide her identity in the ML's world and, in a way, she sort of has powers.
  • Are You Human Too? - The ML is a robot that is modelled to look exactly like his creator's son. The FL works as a bodyguard for the son, and later has to hide the fact that the ML (the robot) has replaced him.

Oh yeah I saw there will have a second season for Joy of Life, but the story seems to be exactly what I'm searching , so I will give it a try . Thank you so much everyone for all the recommendations !

As I'm new in chinese drama , there are a lot to discovers , so thank you ! So when I finish "Psych Hunter" , I will have now so much choice !

For the korean drama, I almost see all of the suggestions , except Arthdal Chronicles (which was already on my plan to watch list and Live Up to Your Name . I love time travel so I will put it in the list .

And wow , big thanks for the one that recommende me "Unexpected" ! I really love story where fiction and reality are mixed like the k-drama "W" !

Thank you for everyone who take time to answer and If you remember other fantastical drama, I'm always interrested , even if it's not historical with costumes .