There is something immediately noticeable about KV's behavior. Where KV was once exuberant, they seem more nervous. One thing to note... it isn't as though KV is moving less. Actually, it seems like all the jittering and tittering is something that KV very rarely stops; even when they hold their wings together to stop gesturing while they talk, their tail twitches or their foot twitches.

If Sayori or Sans are familiar with the behavior at all, it may become more apparent that all of KV's movement and playing with toys has been stimming this whole time. And that stimming has kind of become a bit more anxious; KV pulls on their finger-feathers every few moments, nodding adamantly as things are explained.

"How much information is in this... file-vial?"

KV asks, grimacing a little after the description of the flavor.