Fluffier, bloodier, and skull... healing... Papyrus stiffens, backs a half-step with his hands reflexively raising to his mouth. There was really only one person that could describe, one he hadn't sought to check on. One he had hoped to forget about, and who... he'd hoped... wouldn't remember any of it.

Apparently they hadn't all been that lucky.

"Oh no," he says, all the recognition flooding into face and voice. "I, uh... That is. It's good you're healing! I'm... very glad, that you are." A brief pause, as he struggles for words for a few seconds, and deliberately looks back at that spectral eye. "That means, you remember... What a terrible memory. I'm so sorry that any of that happened!"