i don't really know any thriller manhwas on this site but you could look through the thriller tag, it should be helpful: http://www.mangago.zone/tag/thriller/
oh also if you want to try bastard i recommend reading it on webtoons! https://www.webtoons.com/en/thriller/bastard/list?title_no=485
you can support the author there, everything's free :)
PSYCHOLOGICAL
bl
- http://www.mangago.zone/read-manga/psycho_young_dream/
- http://www.mangago.zone/read-manga/obey_me/
- http://www.mangago.zone/read-manga/killing_stalking/?av=2
- http://www.mangago.zone/read-manga/interview_with_a_murderer/
- http://www.mangago.zone/read-manga/cut/
nonbl; little to no romance
- http://www.mangago.zone/read-manga/an_uncomfortable_truth/
- http://www.mangago.zone/read-manga/save_me/
- http://www.mangago.zone/read-manga/bastard_hwang_youngchan/
hetero
- http://www.mangago.zone/read-manga/head_over_heels/
(Srry for bad english) So a long time ago i read "save me" and i really liked it and a friend told me that if i liked it that much i would love "an uncomfortable truth" so i read it and finished it on 3 days and now i want to read more manhwas like those but i couldnt find anything i thought i would like. Anyone knows some good thrillers manhwas for me? ;-;