See, this is what happens when you can't openly communicate about the entire 'don't worry, I can't die from most normal causes of death' spiel. It makes people worried about you since they can't quite follow your line of thought, and so the other is entirely valid in grabbing onto Chizuru like that. The girl doesn't even resist its grip - mostly since she doesn't want it to think that she's trying to pull away to jump in fully by herself anyway and for this to turn really awkward, or into some sort of struggle.

So instead Chizuru freezes up where she's standing, staring at..

.. well, she doesn't quite know what it is that she's looking at right now, to be quite honest. Chizuru definitely is not from the kind of time period or place that would allow her knowledge of these things.

"What is it..?" She therefore asks.