[fantasyfan]

A Tale of Two Sisters is an amazing film with some remarkable acting. I found it fascinating. My DVD had an interview with the director who firmly distanced himself from the utterly banal American remake which should be avoided.
A few other films that you might like are:

The Classic
A Moment To Remember
Ditto
... ing
Postman To Heaven
I’m A Cyborg, But That’s Okay
A Werewolf Boy

I particularly liked the bitter-sweet “Ditto”.

BTW there are a number of forums devoted to Korean cinema and TV series. The latter are also very good indeed.