Sans was walking home since he was in no hurry instead of using a shortcut. Papyrus would be home waiting for him so they can send their reports to King Asgore. When Sans got home there was a note taped on the door.
SANS I KNOW YOU SAID THAT THE HUMAN IS DANGEROUS AND WE SHOULD STAY AWAY FROM THEM BUT I KNOW THAT THEY HAVE SOME GOOD IN THEM. I AM AT THE EXIT OF SNOWDIN IF YOU NEED ME
-YOUR BROTHER PAPYRUS.
Sans dropped the note and ran. He saw his brother talking to the human. He was attacking and turned the human's soul blue but he didn't seem to put his all into it. I was about to yell to him when I saw something I couldn't believe.