Gender Bender Romance Drama

As the title suggests, I'm looking for a gender bender romance series. In case it's not common knowledge, a gender bender is where the ml or fl disguises themselves as the opposite gender. I would prefer K-drama, or if not possible then j-drama, but will watch others if it's really good. I'm not too bothered about the acting having to be excellent or anything like that, just an interesting or enjoyable story with good characters.  Oh, and it has to be romance* 

Here are the one's I have already seen:

coffee prince

k-pop the ultimate audition

to the beautiful you

the king's affection

the tale of nokdu

you're beautiful

sungkyunkwan scandal

and I've also seen like half of the scholar who walks the night (this one was interesting, but I lost track of where I was at some point and never really finished it.) however, I wasn't really that into it from the start. 

Any recs appreciated and thanks in advance.

Empress Ki    (only in beginning part of the series)

Queen Seon Duk    (only in beginning part of the series)

Secret Garden    (FL is quite the tomboy)

The Rise of Phoenixes    

Mr. Queen    

The Beauty Inside    

@Sunflower thanks, will check them out

@ArniA  Wow that's a lot, thank you so much

@Saygo Thanks for pointing out what languages their in, will have a look at these

C dramas:

Maiden Holmes

Oops! The King is In Love

Bromance - Taiwanese and awesome!

You can check out this list: Crossdressing

Princess Man
Secret Garden - not per say gender bender but the leads switch persona and it is definitely a lot of fun