In both drama, the Female Leads are disguised as transgenders. The Male leads eventually develop feelings for the female leads, but they get confused because they think that female leads are transgenders.

Common in both drama
Celebrity Female Lead / Make Up Artist Male Lead
Rich Woman / Poor Man
Kind Male lead

In both the drama the FL lies in her resume and gets an entry level job even though having prior work experience in higher role.

The premise of both the drama's are pretty much the same. Part time worker younger ML get's hired by the company of the Older career oriented successful FL. In both drama the ML's ex died and he takes care of her mother while doing part time jobs. The FL's Ex was a photographer who stood her up on her wedding day.
It almost felt like a remake. I don't know... may be it is.

It has similar fantasy elements and Korean folklore. Romance between a nine tailed fox and a human. Although the mystery is not the focus point of this drama. The special effects have not aged well, but if you look beyond it, it's a decent watch.