Try my list:
http://www.mangago.zone/home/mangalist/939995/
I strongly recommend PigPen
Here’s a list though there isn’t too much gore ones~ http://www.mangago.zone/home/mangalist/852497/
My most favorite manga like, ever: http://www.mangago.zone/read-manga/monster/
My lists
http://www.mangago.zone/home/mangalist/1030024/?filter=&page=5
http://www.mangago.zone/home/mangalist/1049780/?filter=&page=1
My faves(ive posted these to some one else before but since u asked a similar question)
http://www.mangago.zone/read-manga/euterpe/
http://www.mangago.zone/read-manga/dansei_kyoufushou_datta_watashi_ga_av_jouyu_ni_naru_made_no_hanashi/
http://www.mangago.zone/read-manga/efforts_never_betray/
http://www.mangago.zone/read-manga/don_t_concern_yourself_with_that_book/
http://www.mangago.zone/read-manga/baraou_no_souretsu/
http://www.mangago.zone/read-manga/smokin_parade/
http://www.mangago.zone/read-manga/seoha/
http://www.mangago.zone/read-manga/coponicus_no_kokyuu/
http://www.mangago.zone/read-manga/mahou_tsukai_no_deshi_ga_warau_toki/
Can someone give me a psychological manga that doesn’t revolve around romance/a romantic relationship? Mature/gory content is fine!
Tyvm (●'◡'●)ノ