The art is fantastic, and makes up like 80% of why I wanted to read this and I why I rated it so high. Having read a stupid amount of yaoi in the 2000s, I didn't even bat an eye at the noncon bits, because it's blatantly obvious that everything unsavory will be turned around, since this manga doesn't struggle to be original at all.
The plot is fairly run-of-the-mill "guy buys guy as slave-but-not-really", there's a misunderstanding due to not communicating, some blackmail sprinkled in for flavor, the master-slave/prostitute thing gets dropped fairly quickly, and the first two sex scenes are hinging on that "withholding information" trope for that spicy noncon factor. In retrospect, they're really out of place, considering that Amran dotes on Yoru for the rest of the story (while also withholding information from him, Because Plot), but I ended up liking the rest of the story so I'll allow it.
The only part I didn't like is the brief bestiality, but that's on me for getting tricked by the "Animal Characteristic" tag on another site and not seeing the "Bestiality" one here. Oh well, at least it's only a few pages.
For the smut, art, and happy ending? Great. For deep plot and consistent writing? Lol, look elsewhere.