His brother's name brings a momentary, if noticeable, cloud over Sans' forehead. Papyrus... he left his brother snoozing in the middle of a hallway, an act that seemed cute at first but now made Sans feel incredibly callous. How stupid could he be, not putting together the warning signs.

Maybe he just didn't want to believe it, how badly his actions damaged his brother. It's wrong to put it on Frisk, but Sans can't help it.

"How is he?"