(Underfell sans x reader (female)) UNDERCOVER

The unspoken thought

         Today is the day you're going to have to tell Grillby you're quitting and continue your training with Papyrus. It's been two days since the 'ghost incident' which Papyrus named, and Sans had finally got the courage to start sleeping in his new room. You haven't really talked to Gaster since the night you met him properly mainly because you don't know how to contact him and you've been busy training with Papyrus. But from time to time, you can feel that he is watching you sometimes even if you can't see him.

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         Papyrus has gotten a bit picky with your fighting stances and keeps telling you to use more force when you swing your scythe as you attack. Today he was going to train you more on defense than offense which you have been doing for the past three days. 

         You're in a clear area of the woods in Snowdin waiting for Papyrus to show up. The snow was mostly pact down and a few bones sticking out of the snow and the occasional one stuck in a tree. You've improve dramatically over the three days, you even learned some fighting moves that Toriel didn't teach you. You're sitting on a lump of snow you made as a temporary stool while waiting. You noticed while sitting how deathly quiet it was, you wondered how such an uptight town could be so quiet. 

         The silence was broken by a branch breaking in the distance. You stand up and slowly circle around in a defensive position holding your scythe. You hear a footstep behind as you quickly turn to face the noise and started to assume that Papyrus was probably testing you to see how much you've learned. A giant bone suddenly flies towards you as you quickly slide out of the way just grazing your backside. You hear one zooming from above, quickly swinging your scythe and cutting the bone making both halves land on either side of you.

You hear slow clapping as Papyrus and Sans come out from behind some trees.

"THAT WAS QUITE IMPRESSIVE ARIE, BUT I EXPECTED YOUR DODGING SKILLS TO BE A BIT MORE REFLEXIVE AND SMOOTH." Says Papyrus doing the slow clapping.

         You were surprised to see Sans at your training since Papyrus preferred that we both woke up extra early in the morning in order to start the day. 

"sup Arie." Sans says casually.

"I LET SANS HERE DO THE HONOR OF ATTACKING YOU SINCE HE TENDS TO BE THE BEST AT AIMING DESPITE THE FACT THAT HE NEVER FIGHTS AT ALL." Papyrus says a bit jealous.

         You were still confused of how Papyrus was able to wake up Sans very early in the morning. You were about to ask Papyrus a question but it was quickly answered.

"UNFORTUNATELY FOR TODAY'S TRAINING, I WILL BE ABLE TO TEACH FOR ONLY HALF OF THE TIME SINCE UNDYNE NEEDS ME FOR SOME IMPORTANT MATTERS AND I ALSO MUST CHECK MY TRAPS FOR HUMANS. I'M HOPING SANS WILL BE ABLE TO TEACH YOU MOSTLY DODGING TECHNIQUES WHEN I LEAVE."

"can't wait to see what you've got." Says Sans as he walks over to your poorly made seat made of snow and sits on it.

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        Papyrus was able to teach you different ways of dodging attacks along with knowing when is the right time to dodge. He had to leave after about 45 minutes leaving you with just Sans who seemed to be asleep with a slight snore. You nudged Sans a bit to wake him up but he doesn't stir. You had an evil idea and got farther away from him as you placed your scythe on a tree and grabbed a handful of snow.

         You to try to hold off  from laughing to avoid waking Sans up as you aim your snow ball directly at his head. You throw it making the snow ball hit the side of his skull startling him as you quickly hide behind a tree before he could see you. You here him chuckle a bit as he starts scooping up some snow to form a snow ball of his own. You tried to peak behind the tree with out the beak of your mask to give you away.