These two BL love stories have mentor/benefactor type of duo. One is historical+japanese the other one is contemporaty+chinese.
I really liked both of them!
https://www.mangago.zone/read-manga/yuuutsu_na_asa/
https://www.mangago.zone/read-manga/chen_sheng/
Painter of the Night (artist x artisocrat) is the hardcore version of Painter behind the Curtain, (but the japanese historical version)
it has a lot of crude graphic scenes, as the seme is very promiscuous with lots of men, and is a notorious sex addict. That one is a '' Cinderella tale but darker '' it's a psychological/emotionnal thriller, so stay away from that one if you need a light hearted read. The most lighthearted are the two mentor/benefactor that i gave the link for. I loved them all personnally. But Painter of the Night isn't for just anyone. ( it touches adult topics, like trauma, and recovery from SA )
Smth like painter behind the curtain