(Underfell sans x reader (female)) UNDERCOVER

The Journey

           Today is the day I have the weight of delivering a message for my friends to King Asgore and boy am I nervous. I didn't get much sleep last night if it weren't for Papyrus and I arguing about the dumbest things such as how to cook certain foods properly. I sat in my pot on the table next to the bed that Papyrus was still asleep on and let time pass by. Everyone was still asleep so I decided to leave the bedroom and get a glass of water. I carefully lifted my pot up with my vines as I left the bedroom quietly and headed to the kitchen. 

          I walked pass (y/n)'s room but my curiosity got the better of me and listened carefully for any sign that she was still asleep. I knew Sans had gone into her room at some point in the night but I knew he wouldn't do anything to (y/n). When I first met Sans he didn't exactly trust me but I don't blame him since I am a talking flower, he does scare me a bit though mainly because of the giant hole in his head.

          I got myself a cup of water and decided to play some solitaire to pass the time just so I could calm myself for the journey ahead of me. The journey itself didn't worry me but more of the chances of running into aggressive monsters, but I was mostly worried about running into the one monster named Gaster. The way Sans and Papyrus explained all the horrors he did to them and (y/n) made me shiver in fear.

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          You woke up to the smell of pancakes and to the sound of Sans breathing deeply in his sleep, you figured everyone else had woken up and got changed.

"Sans, come on it's time to wake up." I say softly as I nudged him awake.

"wake me up when it's lunch time." He mumbles and turns over.

You laugh at his responds and fall on top of him.

"Rise and shine sleepy head." I giggled as he groans at my cheesy responds.

"fine, i'll rise but i can't shine." He smiles.

          Sans gets out of bed and puts on an over sized black t-shirt and yawns, showing his sharp teeth as his single golden tooth glistened.

          Everyone but Flowey was in the kitchen as the smell of pancakes filled the living room. Sans sat down at the table as he attempted to wake up. You walk into the kitchen and see Papyrus teaching Toriel how to cook pancakes. 

"...AND ALWAYS CHECK TO MAKE SURE THE PANCAKES AREN'T BURNING SINCE THAT IS A COMMON MISTAKE TO MAKE―WELL, TECHNICALLY THAT'S A COMMON MISTAKE FOR SANS WHEN MAKING PANCAKES BUT IT'S STILL GOOD TO KEEP THAT THOUGHT IN MIND..."

"Thank you Papyrus for that advice, why don't you go and wake up Sans and i'll continue cooking."

"CERTAINLY YOUR MAJESTY―I MEAN TORIEL." Papyrus says correcting himself.

He turns around and notices you awake and seemed surprised about this.

"AH (Y/N), GLAD TO SEE THAT YOU'RE AWAKE!" He says as you both step out of the kitchen.

 Papyrus was more shocked to see Sans awake more than he was shocked to see you awake.

"SANS!?! HOW ODD IT IS TO SEE YOU AWAKE WITHOUT ME TELLING YOU TO!" Papyrus says surprised.

"yeah well that's because this girl here woke me up." Sans says pointing to you.

"...WAIT, WERE YOU SLEEPING WITH (Y/N)!?!"

You and Sans violently shushed Papyrus in fear that Toriel might've heard.

"yes paps i did, what's wrong with that?"

His face became a bright red and whispered back to Sans.

"Did you two...you know..."

Papyrus started making obscene gestures which made you and Sans blush more than him.