killing stalking, okay me and probably the most fucked up one an easy target :)
if you want something really disturbing you can try “Orc’s bride”
I do not recommend though
Yatamomo
Heartless
https://www.mangago.zone/read-manga/hogu_hagyeongsu/
https://www.mangago.zone/read-manga/twilight_1/
https://www.mangago.zone/read-manga/recipe/
https://www.mangago.zone/read-manga/caste_heaven/
https://www.mangago.zone/read-manga/doronuma/
https://www.mangago.zone/read-manga/scarlet/
https://www.mangago.zone/read-manga/red_theatre/
https://www.mangago.zone/read-manga/dogma_akabeko/
https://www.mangago.zone/read-manga/nishikaidan_no_akuma/
https://www.mangago.zone/read-manga/to_the_sea/
https://www.mangago.zone/read-manga/kiyoku_tadashiku_utsuku_shiku/ (not that there isnt happy ending per say, but the journey is just.......)
https://www.mangago.zone/read-manga/iyagaru_anta_no_kao_ga_mitai/
https://www.mangago.zone/read-manga/boys_of_the_dead/
https://www.mangago.zone/read-manga/nii_chan_harada/
https://www.mangago.zone/read-manga/spring_snow_odongtong/
https://www.mangago.zone/read-manga/killstagram/
the 2nd one is ongoing but really messed up
messed up BLs with or without a happy ending,it can be all sorts of fucked up idc,thx!