The ending had me puzzled, so much so that I had to search it up. Although I'm happy the story followed with a consistent storyline with every episode slowly building up to the end. But one of the characters, Kang Seok Yoon I didn't really see what happened to him so I'd say it wasn't perfectly wrapped up but it's okay because once you watch you'll probably assume what happened to him. I like it but it actually was quite disturbing and I can't say much about rewatch value because I haven't actually rewatched a drama. Moral of the story, don't bottle up your anger and be careful who you trust.