KoD's author writes a lot of good horror with comedy: My-five-elements-lack-you Fantasy-farm Phantom-skeleton-painting The Haunted (more horror romance than comedy) Welcome to the Nightmare Game (more horror adventure)
Yu Brothers’ Case Book and Illusions, Lies, Truth have the setting and MC type you’re looking for They aren’t BL (actually no romance at all) but they mostly only have male characters so there are plenty of ships xD
Boyfriend Always Turned Out To Be A Horror Movie Boss. Forgot if it was a horror-comedy type but it is definitely a horror bl novel.