OK, this isn't a Manga/manhwa, but it's a graphic novel named "nine stones". Holy hell!! Main guy goes crazy after he's forced to watch someone cut up his boyfriend, and then feed him to the MC.
I feel like you've already read most of this
https://www.mangago.zone/read-manga/joou_heika_no_isekai_senryaku/
https://www.mangago.zone/read-manga/shin_ai_naru_boku_e_satsui_wo_komete/
https://www.mangago.zone/read-manga/funouhan/
https://www.mangago.zone/read-manga/massacre_happy_end/
https://www.mangago.zone/read-manga/brutal_satsujin_kansatsukan_no_kokuhaku/
https://www.mangago.zone/read-manga/the_hero_who_seeks_revenge_shall_exterminate_with_darkness/
https://www.mangago.zone/read-manga/shiver_junji_ito_selected_stories/
i'm just gonna leave this here https://www.mangago.zone/read-manga/fruit_of_the_tongue/
Crime and Punishment - https://www.mangago.zone/read-manga/crime_and_punishment/
I love everyone who replies, yall have my best wishes in life and in everything regardless
ε=ε=(ノ≧∇≦)ノ
im talking BLOOD INTESTINES ORGANS GORE DISGUSTING SHIT YOU CAN THINK OF IN THIS UNIVERSE.
IT CAN BE THRILLER HORROR FANTASY ANY GENRES I DONR CARE AS LONG AS IT HAS GORE and probably some smut, sexy shit and some love cause yeah, could be bl, gl or straight.
No fixed plot, just recommend shit that you find the most gorey shit, thanks!! (づ￣ ³￣)づ