Looking for BL where MC is the gong, and ML(Shou) is black belly and hates the world but the MC, (if QT BETTER EVEN)
Haven’t finished reading the whole story yet but I think the first arc of https://www.novelupdates.com/series/hold-his-hand/ fits your requirements at least
The only novel that I have read and fits your requirements, I think this one (but it's not QT sorry) https://www.novelupdates.com/series/devil-venerable-also-wants-to-know