Fairytale Complex - [Undertale | Sans x Reader]

Chapter Eleven | Premonition

How would they react to him having caught them dancing?

That's the only question Sans can ask himself when he enters Frisk's bedroom, both parent and child too busy moving to the fast-paced beat of the song to notice him by the door. 

Against interrupting their moment, Sans stands by and observes the scene from afar, paying attention to both people involved in the dance. Nonetheless, his attention soon moves on to the near faultless sway of (Y/N)'s arms, waist, and footsteps, following up to the harmony of the song. The view makes him wonder if -- perhaps -- they'd practiced a similar dance for the night of their wedding. It's either that, or they're secretly a dance teacher in their free time, somehow balanced with their full-time work as a secretary. There's likely no other, reasonable explanation over the swiftness and clean execution in each step they take, likely to have some professional experience based on how quickly they adjust to the consistent changes in rhythm with ease.

"Come on, honey!" they exclaim, grabbing Frisk by both hands and swaying them around the room. Their feet stomp rhythmically against the wooden floor, all while keeping up with the younger one's pace. "We'll be dancing this for your birthday in no time!" They laugh when Frisk stumbles and covers it up with improv, claps being given as a reward over their recovery. "See that? You're doing great!"

The music carries on playing as they both take a break, though the smile on (Y/N)'s face fades away the moment they take their phone. They lower the volume and frown at the screen; their expression's kept hidden from Frisk, who's now resting their head on their parent's lap, the younger one's breaths steadying while the elder one's quicken. Their gaze turns wet, their shoulders taut, and they blink a few times, lower lip bitten on in an attempt at preventing that sorrow from showing any further than it has.

"(Y/N)?"

Sans doesn't know what makes him call out for them so quickly, but something about the human frowning with genuine sadness rather than annoyance over his flirting makes his soul ache. They look towards him once their shirt's long sleeve wipes the one tear that does manage to leave their eye and run down their cheek. "Yes?"

He considers what exact response he can possibly come up with, choosing the worst one out of pure unpreparedness. "You dance good."

Weren't Frisk on their lap, he would've no doubt assumed they would be kicking him out by now, yet all the human can manage is another question, sounding borderline irate when it leaves their mouth, "And just how much did you see?"

"Uh… Everything?" Again, he screws up and sees their glare darken. "I mean it, though," he adds, hoping for the best. "Are you really gonna dance with Frisk for their birthday?"

Finally, they smile, a nod accompanying it; bringing up something related to their child rather than their own self seems to do the trick, thankfully. "Yeah. It's... It's kind of a tradition by now." They hold Frisk tight by the underarms and stand up to lift them high in the sky. "It's about our fifth time doing this -- Right, honey? Though I doubt you remember when you were three! ...Or do you?" They spin Frisk around, laughing after their child does so first; the pair's foreheads bump against each other when they stop, making the younger one burst out a giggle again. "I'll keep doing it for as long as they want to!"

Their phone rings, hitting the brakes on their joy again. They set Frisk back down on the floor and clench their hands in what looks to be them bracing themselves. When they find some courage, they take the device from where they'd left it, eyes tearing up again after. "Sorry about this, but… Could you watch over them for a moment? I- I need to take this call."

Sans nods, gesturing for them to go on ahead. "No problem, pal. Take your time."

"Thank you."