Responses
http://www.mangago.zone/read-manga/zenra_otoko_to_shibainu_otoko_keishichou_seikatsu_anzenbu_yuugeki_sousahan/
Maybe that? TBH though I didn't read past the first chapter when I realized, despite it being by Asia Watanabe, it's not actually Yaoi.
following!
I swore that I rated it and put it on a list but I can't find it! I'm pretty sure it was under a shojo tag and some folk really wanted it to be a BL but it wasn't. The main character works as a police officer or detective (boyish looking, probably early 20s) and them finds a naked man in his bed. The nude guy then disappears and the main character is exposed to weird demon shit and then joins their department where the naked guy already works.
Does any of this ring a bell for someone?