[Haru continues to listen to these theories with intent, making sure to thoroughly go through them in her own mind to draw her own conclusions.

Ryuji's theory makes her think, "Haru" was taken. She ended up typing in "BeautyThief" in frustration, and then changed it once more to "Noir". But that thought sticks in her mind. How many people could be named "Haru" that would have been on this station.]

That would imply that we have been here much longer than we remember. That wouldn't make sense, would it?

[Haru has to step out of the box for a moment, nothing here is normal.]

We would need evidence to support that theory, but I don't think it would be completely impossible.