Aw, he stopped. The scratching draws Chara's attention, highly tuned to movement as they are, and they notice the 'scar' there. That's downright strange, until they consider that as a human, he might have been able to take a hit. It's odd to think about, like the idea a Sans that was entirely blue, bones and everything.

They tilt their head, unabashedly looking at it, but they don't ask. Yet.

"Ah. I had wondered."

How many Sanses are there here? That's too many Sanses. There's too many Charas too, but that'd be the case with even one Chara.

"One question. Why."

There was that whole thing with eating everything on the table, with notecards even, but... the same effect could be achieved by getting someone to dump it all off the Edge, right?

*Not everyone has an ulterior motive, Chara!

Name them one person who doesn't.

*Monster Kid.

Doesn't count! There's then a bit of mental back and forth 'does too' 'does not' bickering, Chara's eyes unfocusing a little.