So I had to write a review because of the bad ratings on MDL and bad reviews dropping it and stuff, first rule on this site is to never trust the ratings on MDL, this got 7.7 but it doesn't mean it's bad, sometimes you have to give it a try, many underrated shows on MDL is actually good, ok so this show is somewhat similar to Sweet Home, not trying to compare these two but yes both had almost similar vibe and story. I think you somewhat have to be emotional vulnerable to inhale the "black smoke" and become a mutant just like in SH where your greeds and desire are the ones that turn you into a monster. I agree that they somehow stretched the story and it became draggy but I think they wanted to create more tension and atmospheric vibe to it and more chasing scenes that's why it became draggy, but it's okay. Everything was okay, the OST was nice as well. But it was quite disappointing that they couldn't save Dong Rim :(( And that post credit scene where they show that a new sinkhole appeared in Yeouido.. I'm not sure if that's an opening to a Season 2 but I'll be glad to have one more. It's not that it's a cliffhanger but it's fun to watch yknow? I think Yujin (Dong Rim) did a great job here after acting in True Beauty, she looks damn pretty here. I also do agree that there were many unnecessary sub plots in the show, but I guess it did come all around in the end because it was related to Dong Rim with the hit and run and stuff. But I think we could have easily finished the show with like 10 episodes.