This is my one of my list, maybe you'll find something there.
http://www.mangago.me/home/mangalist/86945/
These are a few of my dark favorites:
http://www.mangago.me/read-manga/togari/
http://www.mangago.me/read-manga/demon_assassins/
http://www.mangago.me/read-manga/dendrobates/
Thankies!
You're welcome, I hope it helped.
I think this fits the "character that follows a dark/forbidden/evil path" that you were looking for:
http://www.mangago.me/read-manga/terror_man/
Hey hey, I'm looking for a manga with a demon main character or a character that follows a dark/forbidden/evil path maybe. I know their hard to find but yeah, preferably with a male main character but girls are okay too.
Thankies in advanced!