Moonlight Drawn By Clouds is a romcom set in the Joseon era and based on a web novel by the same name.
It aired Monday & Tuesdays at 22:00 on KBS2, from 21st August 2016 to 18th October 2016.
It follows a lady who disguises herself as a man to give men advice on dating. She unknowingly meets the future Crown Prince (who is, in turn, unaware that she is a woman).
The Crown Prince becomes interested in her and when his eunuchs become aware of this, they try to get her to become one of them!