Dramas where the girl is naive and sweet and the guy is protective and caring

I like the ones with the girl is really childish and naïve and the boy has to watch out for her. 

Like Game Rai Game ruk 

High school love on (kind of)

The mermaid (beginning)

 honey_boo:

Crash Landing On You

sorry but are you kidding?

70-80% dramas have that kind naive FLs but there are few dramas with real badass strong independent female leads and "Crash landing is one of them ))))) even ML who is also strong man becomes more childish in second half of the drama, then FL who protects ML and is really strong woman ))))

also My First First Love isn't good example, especially when (as I already said) you have 80% dramas with this type of FLs )))))

The K2