The irony is that Mirio did take advantage of her, just not immediately and not brutally like the others apparently did. He still fucked her the moment he could but I guess because he said "I love you" first it makes it better? Also it was heavily implied that part of the reason she's submissive is that something about her existence craves being used for sex because she herself attacks Mirio to fuck him when he isn't feeling up to it early on.
But it seems like the author is taking Iver's advice and rewriting the world of this story as well because like 99% of this shit is retconned and the author is literally just throwing out random bullshit as a smokescreen to distract readers from the obvious genre shift. Especially apparent when the author throws around a bunch of pseudo/faux science to make it seem like they've really thought this through; feigning knowledge in a "if you present yourself as knowledgeable most people will assume you are" kind of way.
I can see how this somehow drags on to chapter 77 at this point when the author doesn't care about coherency or structure anymore and is just throwing shit at the wall that they think is cool/sounds impressive. This manga is now an improve session with the editor "Yes, and..."-ing everything the author throws out.
