Both dramas have the same actress. It is set in the 1930s. Something bad happens to the girl in the both second last episodes and its in their wedding day, (I'm not revealing what happens).
Both have sexy male leads, I wanna eat them up...(yummmm)
The 2nd female lead seems bad but she's actually good. Full of drama.
The second make lead is evil.

These two dramas are similar because a superstar and a normal not so famous person live togethe. I don't know what else to write because this drama has just started BUT------- watch it. You'll understand how similar they are.

Both female leads cross dress as a man in order to survive, pretty much focuses on their feelings for each other.