Red Sky made the list because Kim Yoo Jung was immense, as always. But the writers fell asleep in episodes 7 through 12. It is noticeable to me that my top two were shorter than the usual 16 eps. Hopefully it's the beginning of a trend among K-dramas. Sixteen episodes almost always has too much filler.
(Bonus: The Silent Sea , want to add that too, but you can only choose 3. Even when it didn't live up to my expectations it was still good, and lovely to see a kdrama set in space 🤩)