Maeng Sang-hoon

A romantic comedy about a talented gallery curator named Sung Duk Mi, who is an idol fan-girl underneath her professional veneer. Meanwhile, her boss Ryan becomes a passionate fan-boy of her (imdb.com).

An ordinary college student, Lee Seol, finds out she's a princess. The grandson of Daehan Group, Park Hae Young, is put in charge of educating Seol on proper etiquette. However, Hae Young is put in a precarious situation when he finds himself drawn to Seol, the girl who will take away his inheritance if the monarchy is restored (mydramalist.com).

The best acupuncturist of Joseon, Heo Im, (a historical figure) finds himself traveling 400 years into the future, where he meets Choi Yeon Kyung, doctor in a modern hospital. Though impressed by her, differences in their methods and priorities make them clash. (imdb)