Can someone name a Korean movie that was on Netflix recently? via /r/movies

(Sorry if its the wrong subreddit) There was a korean movie on Netflix, I can’t quite remember the whole plot, but it was along the lines of a hitman who’s first trying out, and they give him a test he’s supposed to fail. (But he doesn’t, I think that was the whole point?) anyway sorry. I cannot for the life of me remember any actors or the name. It was on my Netflix list but it’s gone and I’m thinking they got rid of it? I’ve tried googling it and looking up Korean movies on Netflix without any luck.