Zombieland BL post- apocaliptic, i have been reading Rainbow City and Believe My Sign, and Monster in the Mist, the first two are my favorite, and there is another one called Dead Man Switch but it's too scary for me :-D i like zombies when i don't see them upclose lol _ i appreciate the colour palette choice of Believe My Sign , the blood is black so i am chill :-D i don't like gory/horror so you might like Dead Man Switch, unlike me !
This one is my favorite BL horror if you haven't read it already it's really cool !!! https://www.mangago.zone/read-manga/hikaru_ga_shinda_natsu/
+1 for rainbow city
Corrosive
pls recommend me a bl/yaoi manhwa/ga that is horror or apocalypse (except for black mirror, dreadful night, believe my sign and killing stalking or any popular ones bc i probably already read them lol)