
There are more on the Twisted side in this list
Twisted/Stalking/Yandere List
http://www.mangago.zone/home/mangalist/554928/

There are things I read a while ago that were so fucked up and screwed with me big time and now when I read then again it’s like... “oh something horrible and degrading is happening, you know, the normal” and I have no reaction to fucked up stuff now and I kinda miss having those reactions cause now I’m too desensitized. That ever happen to any of you?

http://www.mangago.zone/read-manga/kuroneko_saiman_fakkyuu_tsunage_orc_no_ideshi_haikyuu/
http://www.mangago.zone/read-manga/gintama_dj_kabe/ (also check out this artist,they got the best fucked up mangas, http://www.mangago.zone/r/l_search/?name=Harada )

http://www.mangago.zone/read-manga/gintama_dj_kabe/
http://www.mangago.zone/read-manga/gintama_dj_mienai_kusari/
If you’re talking about yaoi ε=ε=(ノ≧∇≦)ノ
Gimme the most fucked up shit you have read