I have never been a Manga fan, but this fall, I'd like to give it a chance. I'm starting off with Erased, a show on Netflix. The art work so far is stunning and the first episode has grabbed my attention. It is about a young man who involuntarily finds himself kicked back in time during times of nearby crisis that lets him intercede to prevent tragedy, sometimes at his risk to his health.

I'm not sure where it's going, but so far we have the mystery of a serial killer who has abducted children in the past. How this mystery comes into play with the character's strange abilities are still to be revealed.
Give me a hand. What other anime should I keep an eye out for? I want something dark. Very dark.