Responses
i know plenty. but i forgot all the names. you're going to need to be more specific so others can help pinpoint "the one" you want.
This is a pretty normal trope in yaoi. (unless I interpreted you incorrectly) Good luck trying to find it. Here is one that I remember has that trope.
http://www.mangago.zone/read-manga/if_you_tell_me_to_do_it_i_ll_do_it/
Do you know the name of this yaoi where his father runs and leaves him with debt so then he the uke has sex with him to pay it off?