I'm looking for dramas with age gap (a woman is older than a guy). It will be the best if it would be similar to The K2 (powerfull woman falls in love with bodyguard...) Do you have any? Thanks!

Witch's Romance is my favorite age gap drama!

I've also enjoyed Secret Love Affair, I Can Hear Your Voice, and I Need Romance 3! I think they all feature very strong and powerful female leads! Although the male leads vary between the dramas