One Stop Erotica Shop!

LOL. That's a helluva question, Tehuti.

My personal feeling: within the folder description, indicate that those offended by non-consensual sexual activity might want to steer away.

As you said, what you're describing isn't considered non-consensual in your fictional society. However, you want to apply the "nonconsensual" label to warn those of our society, who would consider the relationships you're describing as non-consensual.

Honestly, I know it's not the solution you were looking for, but I wouldn't worry about offending people. If you include in the description of the folder that the actions within the chapters might offend, then I think you've covered your bases. I mean, that's what the XGC rating signifies.