not much still a few can be helpful http://www.mangago.me/home/mangalist/308897/
and this one i recently read http://www.mangago.me/read-manga/bastard_hwang_youngchan/
yaoi/psychos:
http://www.mangago.me/read-manga/color_recipe/
http://www.mangago.me/read-manga/killing_stalking/
http://www.mangago.me/read-manga/feeding_lamb/
http://www.mangago.me/read-manga/scarlet/ (kinda)
https://myreadingmanga.info/madobuchiya-nishin-kiseki-amedama-eng/
yaoi/creepy:
http://www.mangago.me/read-manga/samenai_yume/
http://www.mangago.me/read-manga/to_the_sea/
http://www.mangago.me/read-manga/notpia/
http://www.mangago.me/read-manga/heartless/
https://tapas.io/episode/467811
not yaoi/psychos/creepy:
http://www.mangago.me/read-manga/doctor_du_ming/
http://www.mangago.me/read-manga/prison_lab/
http://www.mangago.me/read-manga/human_chair/
i read a horror oneshot about curse it was really creepy just take a look http://www.mangago.me/read-manga/layers_of_fear/
Any manga suggestions about psycopath, thriller or creepy??