Recommandations

Both are cute, lovely and funny and have one lead actor - Tamaki Hiroshi.

Adult serious thing.
Both have dark, bitter, cruel atmosphere.
Must watch for noir lover.

Actors Park Young Kyu and Park Sang Won have similar characters in both dramas, such a funny and childish character, a father who does not grow up whatever progress in an age, keep of being a mama boy, although he has sons! ;'D

In both there are boyband singers playing the main male roles. There is one female, and in both the males become interested in that one female.
There is some comedy, though that differs a little between the two.

Both dramas are based on BL novels and have some similar characters and tropes

They are the same with the same storyline, but in a different language. The other one is Taiwanese, this is Korean. And there are different casts

joon gi is the main lead in both dramas and both of them have a fantasy and supernatural vibe to them

both are historical dramas with a fantasy theme with a female characters disguising as a boy ^^

So clearly, Healer is way way better than City Hunter but if you saw City Hunter then you are in for a treat with Healer.

Both dramas have an arrogant and rich boy and a poor girl whose is not smart nor beautiful. The difference is that the main characters hate each other in the beginning. Later their hate changes into love for each other. It's very sweet and it's the feeling of someone's first love. Although there are not so many romantic moments. It's still one of the best old Korean dramas with two very good actors. They both share a great chemistry.

If you're in for great chemistry and a cute couple then go for this one!!!

it has very sweet romantic moments but also some sad moments. The man is very cool towards the girl. The girl Mi Young is very clumsy and not smart nor beautiful. But she falls in love with the CEO Lee Gun. In the beginning she has to marry this man because of an accident she becomes pregnant of him. It's also very funny. The series gives a similar feeling as It Started with a Kiss.

If you're looking for a different story with a similar feeling and great chemistry between the actor and actress. Then go for this Korean Drama!!!

2nd part of the Movie based on the same story and characters ( adapted from japanese manga/anime )

Movie based on the same story and characters ( adapted from japanese manga/anime )

Both shows are about high school teen-love and friendship. They both show the interconnected-ness of people.
Their main plots revolve around the struggle of everyday high school life for the characters.
The shows also follow a similar pace of events, with nothing occurring really that quickly or slowly--kind of the pace you would expect from a mellow/low-key high school drama.
There is also a slightly nostalgic feel to both of them.

both deal with family, life, relationships and have a similar atmosphere and feel to it.