I was already a stan for Korean movies but I started keeping up with Korean shows after watching the first season of Kingdom.
No, not all of their series are high quality. I'm not into melodrama or romance much and there's a lot of kdramas with that so I ended up watching shows that sounded good in the premise but ended up trash. Had to do that to find the good stuff.
Like Rugal came out a few weeks ago and it sounds like a cool action thriller but after watching half of the series it's poo poo trash. Shout out to
@Bryan Danielson
IMO the best Korean shows I've seen on netlfix go:
Kingdom
Stranger
Vagabond
Extracurricular
Signal
Others I liked but YMMV:
My Country: The New Age
Nightmare High
Possessed