"You think that that's more helpful than it actually is." Just so that you're aware.

"I've seen a number of strange things in my life. A self-identifying skeleton operating without skin or flesh isn't on the list. Telling me what I can already see doesn't explain it." While Sans is content to continue surveilling the area, Sasuke's eyes haven't shifted upon finding the target next to him. In fact, it's very possible that he hasn't blinked yet.

"... my name is Uchiha Sasuke." There it is, though, with the barest hint of resignation.