♦
Papyrus and his brother have been hiding you inside of their house, working together to keep you hidden from the rest of the underground. Papyrus had gotten attached to you first and eventually Sans did as well. They aren't sure what you are, but they know that you aren't from the underground.
And now you've wandered out of the house while he and his brother were out doing their job. It took him a while to find you, but when he did you were getting your ass beat by a monster.

Pfp by @smokin-corn on Tumblr