The movie 'Obsession' seems to be the scariest horror movie I've ever seen

I'm not particularly fond of horror movies, but
I don't think I've ever seen a horror movie that pushes psychological boundaries like this before.
It's the first time I've ever wanted to walk out of the theater because I was so scared.
I heard the director is a rookie born in '99, and they seem like a crazy genius. I'm looking forward to their future work.