Sans watches Frisk turn it over in their hands, like someone watching someone they more or less trust handling a super expensive vase. He's not about to leap out and grab it from them, but there is a certain anxiety that comes with it being moved at all.

"'Worse' is probably the wrong word," he says, vaguely. "Just... reminding me of some things, and... I'm pretty sure I know what these crystals are, now. It's... not good, kid." He looks away.

"I think they're people."