"I see. I bought those to test something out, since I heard that trying to buy certain books just gets you alternate versions of what you asked for. It's weird, isn't it?"

[Masumi doesn't say anything, but she did catch that startled look. She just wasn't quite sure what to make of it right now, and it was entirely possible that it didn't mean anything, so there's no reason to make anything of it at the moment.]