omg yeah it seems like it was kaidan bl! i don't know why i assumed the whole anthology was about this guy. thank you!!
oh wait what I read was Bijutsubu no Akumu by the author you linked. which has more chapters of the guy....now that explains it. thanks again!!!
No problem mate, if you're interested in supernatural horror BL check out also:
https://www.mangago.zone/read-manga/ghost_gate/
https://www.mangago.zone/read-manga/creepy_tangy_sweet/
https://www.mangago.zone/read-manga/a_mail_from_my_dead_lover/
https://www.mangago.zone/read-manga/an_ominous_guest/
I have personally read all of them and determined each one had quite good storyline
just what i needed ty!!
Black and white multichapter manga, didn't look very recent. Main character was a high school teacher (maybe an art teacher? One of the chapters was about an art club/assignment at least
involving model drawing, i think he gets assaulted by his student but it turns out he fell asleep/ it was a nightmare /hallucination maybe?) and every chapter had a different messed up or weird thing happening to this guy. Nightmarish vibes. I don't think I finished it so probably wasn't super good but I'm curious