This show is full of sadness. My life is already screwed and this show made me even sadder. This show is made to make you cry. Yes it's full of beautiful scenes and it's so intense but.. Hae Soo's time travel doesn't make any sense. A lot of good characters die in this show. If you can't handle your favorite characters dying, do not watch this show. I'd rate it 8/10. It's a really really good show, my second favorite after Healer, but it's too dark. Watch it only if u can handle it.