The only source I can think of for Kdrama fic is the pit of voles, aka ff.net. Unless you can find some kdrama communities on livejournal, you're stuck wading through the badfic for those gems you occasionally find. That's where I used to get all my anime fic back in the day.

And SPRING! My mom and I had lunch today and we sat out on the restaurant's terrace and it was glorious!