WHAT IS THE MANHWA W THE BLACK HAIRED GUY AND GRAY HAIRED GUY AND GRAY HAIRED GUY GETS A S...

I thought maybe you meant this one but the mc has blond hair not black so maybe I'm wrong https://www.mangago.me/read-manga/yian_s_binding_yaoi/uu/br_chapter-326427/pg-1/

started reading this one last night and got to ch5 so idk about a hose, but he gets a broom shoved up …
tbh it sounds like it could be this one lol
https://www.mangago.me/read-manga/no_return_after_use/

I think you're right that it's this one I remember something like what OP asked happening around chapter 18

does this uke just get everything shoved up his butt i thought there was a vacuum too

Oh lordy it is this one thanks king

i really want to know the psychology of yaoi artists when they’re drawing

they need to be studied tbh (▰˘◡˘▰) I wanna know the artist behind these works, what are they like irl?! how did they cook up theses plots and decide to draw a story about them!