Kind of Sea and Cake-ish with some really excellent vocals and drums.
I used to hate K-pop. These days, I find some of it tolerable if not perfectly disposable. There is a lot of Korean hip-hop that I like, once you can ignore Psy. That said, here's a great Youtube series featuring a ton of great South Korean indie-rock, sorta-jazz, electro, and even some experimental stuff: Onstage.