Sans and Opal where walking to Snowdin, when suddenly a small skeleton jumped out of the bushes.

"BOO!" He shouted.

"Where you trying to scare me bro?" Sans asked.

" Nooooooo, I just wanted to surprise you and who ever that is. " he lied, and pointed at Opal.

"Righhhtt. Anyway Paps, this is my new friend Opal, Opal, this is my little brother Papyrus"

"Hello! I'm the GREAT PAPYRUS! Future head of the Royal Guard!" Papyrus exclaimed , with a lot of excitement.

"More like head of cuteness right now" Opal joked.

"Nyeh heh heh! That was much better then Sans' puns!" laughed Papyrus.

" Hey Opal, wanna come to our humble abode? It's nice there" Sans aaid.

"Okay! Let's go."

Sans, Papyrus, and Opal all walked to there house, where they sat on the couch. Suddenly, time seemed to pause around them.

"Listen here, human, one wrong move against me or my brother, and you will die" Sans said, sounding very threatening. "Don't underestimate me. I've already kill a human, so another one wouldn't be a problem. Your lucky you've got a monsters soul."

"I promise I will never harm you or your brother" Opal quickly promised.

"Good. Even if you have a monsters soul, you still need to go to King Fluffybuns. After my bro goes to sleep I'll take you to him" Sans explained.

Time quickly came back.

"Okay, bro, it's passed your bedtime, now up to bed." Sans said.

" Uhhh, fine...night sans" Papyrus said sadly.

"Night bro."

Papyrus went up to his room.

"Now, to the kings place" Sans said

A/N: Its always been a headcanon of mine that Sans killed the Bravery soul before making the promise to Toriel.