I've read Just a few chapters for now, but i can say that this manhwa can be also called "The nobles' sugar baby"
However, if you think about it in another way Sasha is almost starting her own business. Entrepreneurs see there’s a need for something in society and they provide that need, weather it’s a respectable need like tutors or a less respectable need like prostitutes and they make a profit. Sasha is providing comfort services amongst the noble women and in exchange she gains, not money, but information and a means to survive.
Omg when I read it I saw "Ch.1" and so I thought it was gonna be continued but now I returned and it says it's just a promo. Crying.