This was genuinely one of the most shocking and intense pieces of game thriller/horror I've ever watched in my life. Right from Episode 1 we are built this picture of a school trip to this youth center that slowly starts to go wrong, even when we know it's going to happen we don't know to what extent. Then as soon as Episode 2 rolls around we're thrown straight into the deep end of this gore-y and violent show and we have to follow each character blindly through whatever they face.

At first, I didn't like the ghost thing (until the final episode) because it felt like a bit of a side plot that didn't make any sense, plus how in Episodes 4 and 5, Yoon Seo just defies the laws of physics and no-clips out of reality which brought me out of the show a bit. It also felt like they kept forgetting that they had a ghost at points and just threw it in at points because they realized they needed to round that off. But luckily by Episode 12 it kind of gets explained as to why it exists. This ties into another one of my points that the ending just feels a bit... naff. It feels like a poor way of explaining why everything happened but then again this is a K-drama and normal real-world events don't happen.

Another thing I didn't enjoy that much was that we found out who the mafia was, albeit we learned each one in about 2 episode intervals, it still drew away from the mystery aspect of the show. I enjoyed up to Episode 6 trying to work out who the mafia was and working out why certain things happen, but they kind of just ruined it by showing us So Mi holding an axe over Yoon Seo's head T-T.

There were some high and some low episodes, namely Episode 11 was a disappointing low considering all the great episodes before it. I feel looking back, knowing what the ending is, some of the unexplained mysteries and random moments did all make sense; but at the time of my initial review, they just felt like an exposition to stretch out runtime.

Overall, I did enjoy this show. I was very emotional throughout it and the production and acting were just brilliant (even if they did act like a slice-of-life drama at points). I will be rewatching this even with the mystery of the ending gone, it's still just fun to watch!