[Sans doesn't want to rewatch it either, though when Papyrus brings up the idea of it Sans thinks he probably should, to make sure he didn't miss anything. But is there a point to that? Can they even do anything with this information? Sans starts working fretfully at his ruffled feathers, smoothing them out.]

Yeah, guess it was my light it has a problem with. Dunno why it'd bother changing me into this if it doesn't like it.

[Since that thing underground was the cause of the initial transformations, right? If it doesn't like (not angel, Sans isn't that) magical light, why transform some of them into something that radiates it?]