THAT is the beauty of Asian Dramas. They have the plot written out right from the start. And the characters never do anything OOC for a reason.

K-dramas tend to get redundant and tedious (as in if you've seen one drama, you've probably seen them all),
I don't necessarily agree with this! I don't watch any of the sappy K-Dramas, I watch all the ones that are supposed to pander to the ~young adults~ and they are all pure, sweet, unadulterated crack, or just downright hilarious and romantic and sweet. Have you watched Princess Hours or My Girl?