I've been repeatedly going over the titles under the prostitute related tags but I can't find it.

I keep thinking about this oneshot I read quite a long time ago. There was a seme guy who might have been the manager of a brothel. Big guy, apathetic maybe? Wears suits. And there's a generic little uke type. I keep thinking maybe he's a cleaner or something, getting used to the place before getting into the business taking his first client. The seme always has his eye caught by this boy and he tries not to care but then when it comes to that time, he rescues the boy.

Try looking at the author Chitose Piyoko i think its Love Trial chapter 4

Dang. I'm rather mad at myself for missing that. Thanks!