I'm speechless when I came here to write a review, kim so Hyun is indeed one of the professional actors for taking such a bold role and so is Sulli, it truly shows us how drugs and mental disorders creates an unimaginable world where you can get absorbed in, and i really love how well the movie was directed, it was as if our conscious travelled to the farthest depths and actually enjoyed in dimension of madness and serenity. And normal doesn't even exist anymore.The ending was just intoxicating and the sounds added topped it all off, as if you were in the admist of gravitational waves yourself just as how kim so Hyun potrayed, It was such a lovely deep movie you don't see every day.