Yep, no doubt, that’s a Bai Asuka manga 
We’re with a combination of
– excellent art, impressively intense, relying on strong contrasts and plentiful female bodies, with only light censorship
– and a series of dark story canvases based on the idea of women willingly, of their own consent, falling into corruption.
While I mention corruption (which implies very gradual mindbreak, ahegaos, shameful feelings, abandoning self-respect, dehumanization, etcetera), I must mention the story types are quite tame compared to other works by Bai Asuka. Two men would have deserved a swift death (blackmailing, enjoying the breaking instead of the sex –> to the pithole!!), but that’s not the entire manga and, again, there’s been waaaay worse before.
Well, see for yourselves if my summary didn’t deter you already ^^
Release credits are for Fated Circle, commissioned by Deyeti, thank you!
By the same artist, I also share Hametorare (252 pictures), Mama Koubi (219 pictures), Swap Slave (212 pictures), Youbo (243 pictures) and Sinful Mother volume 1 and volume 2.
