dark themed manga? prefer no romance or bl

Sweet Home
Bastard

http://www.mangago.zone/read-manga/dark_mortal/
http://www.mangago.zone/read-manga/save_me/
http://www.mangago.zone/read-manga/bastard_hwang_youngchan/ (a bit I think, but still really good)
http://www.mangago.zone/read-manga/ajin/
http://www.mangago.zone/read-manga/infectee/
http://www.mangago.zone/read-manga/super_outcast/?av=1 (not really but I mean, if you haven't already- you should give it a try)
http://www.mangago.zone/read-manga/an_uncomfortable_truth/

oops, I meant a bit of romance in Bastard.

most of these are horror
- http://www.mangago.zone/read-manga/portus/
- http://www.mangago.zone/read-manga/hideout/
- http://www.mangago.zone/read-manga/bradherley_no_basha/
- http://www.mangago.zone/read-manga/apocalypse_no_toride/
- http://www.mangago.zone/read-manga/an_uncomfortable_truth/

Yooo Bastard was pretty good

yeaaaaaaaa I fukin Love It!