I have to keep reminding myself that "no-means-maybe-and-often-means-yes" is a time-honored and well-worn trope of the romance genre.
Everybody keeps calling this one rapey, but if you actually check for it, it's not really. The first time, yeah Asuka says stop (whether it's because they're interrupted or not is unclear though). But the second time, she doesn't ever say no or stop. Not to Miu, and not even to the club when they tie her up. Just, "this is embarrassing", or "I'm scared." Towards the end, she even gets untied and says that Miu can do anything she wants.
Yeah, it dances on the line, and one might make an argument that Asuka's reluctance could be taken for denial. But I would say this is actually one of Mira's less rapey (for what that's worth)