... Oh. Ritsuka has a pretty good idea what's going on now, yes, a particular encounter she'd had shortly after her arrival coming to mind.

"I know what you're talking about," she says calmly, or as calmly as she can manage as she picks up her already brisk pace a little more. "Or at least something similar. I can explain when I get there."

Hopefully that will do for reassurance in the mean time. Especially since Ritsuka could use a minute or two to think about how to explain this. Normally it was other people giving all that exposition to her, not the other way around.