I am actually someone that is scared super easily but I don't know why, I was able to watch it completely without being that scared (which is actually amazing).

I didn't put 10 for the rewatch value because if you know the plot, the story isn't that surprising anymore. I liked it...no I think it was great. The story was not seen before (from my perspective I guess), which made the whole movie a lot more interesting.
The acting was also on point. Woo-shik and Da-mi did an amazing job, I'm impressed.

I think it's the type of movie you should all watch without looking for the plot before, it makes everything 10 times better.
Captivating is the right word for this movie.

And unexpected.