@kronix Ikr? I can't figure out why they'd continue reading if they're that bothered by it. If I remember correctly, the slave dealer expressly mentioned that Roxanne was available for sex before the MC bought her. Readers could have bailed on the story then.
As far as isekai stories, this is one of the best that I'm reading. It has a nice balance between the game-like mechanics, plot progression, convincing world-building, & decent character development. And, this MC stated from the get-go that he was committed to the harem route. No angsty, super timid hand-wringing, thank god.