I honestly don't think I've ever seen a TV Show executed so perfectly from the world building to the storyline to the acting to the ost and atmosphere creation to the banger ending!! I spent 2 weeks completely crazy scratching my brain trying to piece together what REALLY happened in the ending!! But most importantly actor Siwan takes you on a journey of slowly losing your own mind with him slowly bit by bit, episode by episode. You will feel how he reaches the boiling point as a result of the combination of two things: the environment he was thrown into, and a part of his own self buried deep inside that the environment brought out of him!! Seriously, it's a journey you have to take! The chemistry between dongwook and siwan was also palpable! All the neighbour characters were written and executed so well!! Just cinematic perfection!! The only TV show I've ever watched that got a 10/10 from me.