The CORE’s kinda empty.
For a while now, since choosing to enter a different timeline, you’ve been wandering around the Underground for what would be a few hours, never spotting any trace of monster-kind.
Had you entered a recently finished Genocide timeline?
If you did, that would make sense considering the amount of dust flowing through the air, yet you actually saw one individual there, with a corpse of another. Seems like they were proud of their accomplishment, though it was just speculation.
In reality, it was more relief.
“…finally got ya. It was never gonna be that easy.” Wait, that’s a Swap!Sans variant, AND they’re a woman? What kinda timeline did you enter? “…I pity you, kinda. Did all that, traumatized me, and all it did was result in a bone piercing your soul.”