Sans AU headcanons and Oneshots!!!!

Underswap meets Dream lowkey (DREAMBERRY)

Sans has been gone so often recently.

They all noticed it, Alphys, Undyne, Papyrus, Chara, hell even Temmie realized.

On top of that he hasn't been following the script he was set on during and after resets. It just started off simple, looking distracted, skipping over dialogue.

But now, he has managed to miss entire scenes he was supposed to be in. He has started responding in insanely different ways, he has... stopped caring about what the monsters of snowdin thought of him.

That was one of Sans's main things, he would exclaim about how cool he was to hide his own insecurities.

Now he... he seemed so much more distracted, so much so that Papyrus had gone to even Chara about it.

He had this sort of... untouchable aura that he'd never had to him before.

Sans was currently missing from the group right before the monsters break the barrier, he wasn't there during the Temmie fight either. Everyone began to feel uneasy, whether they knew why or not.

"Papyrus...? Where is your brother?" Alphys asked slowly in an attempt to keep herself and everyone else calm.

"I don't know." Papyrus confesses, a sigh ringing out from what mimics a throat. "Sans has been so... strange recently."

The air settled in a tense fog before Alphys let out a frustrated groan, "First he stops showing up at his sentry station in Snowdin, doesn't show up for cooking lessons, hasn't shown up for training and now he's nowhere to be found again?!"

Everyone who knew Sans had to admit that was strange, he was a hard worker and very motivated. Papyrus knew this the best and Sans's newfound disappearances worry him to no end.

Chara spoke up, "I've seen him a total of two times, once for him to briefly attempt to explain the puzzles and second to fight him at the edge of Snowdin. He seemed to be in a hurry both times."

"That is... s-strange based on the things I've heard of him from P-Papyrus." Undyne shyly added, the absence of Sans to comment on them knowing each other felt wrong, even if they knew it to be so or not.

"Yeah! Sans is a hard worker and a relatively happy guy, it doesn't make sense for him to just abandon everyone for hours at a time." Alphys said, crossing her arms in confusion. "He also has unwavering loyalty deep embedded in his bones, it doesn't make any sense."

"This... Sans is close with you Alphys, yes?" The Queen asked, she put a hand on Alphys' shoulder, "Surely he'll have an explanation."

"Maybe so... but this isn't like him at all. I'm... worried." Alphys coffessed, biting her lip in distress.

"This Sans of yours seems to be a good character and quite strong from what I hear, I'm sure he'll be fine." Asgore said in an attempt to console Alphys and probably Papyrus, who for once wasn't smiling.

Suddenly, there was a loud pop and the sound of two voices, they appeared to be arguing over something. The monster's heads all turn towards the noise and suddenly two skeletons come into view, one recognizable as their very own Sans yet the other, dressed in yellow, was unfamiliar.

Sans and this unidentified skeleton were arguing over what was now more clearly made out to be... the difference between affect and effect?

The monsters stood uncomfortably for a moment, watching the duo argue before Queen Toriel cleared her throat. The pair cease their squabbling at once, the yellow one gasping and muttering an apology, bowing to The Queen.

Sans, however, while stopping did not even acknowledge Queen Toriel's existence, eyes still trained on the yellow skeleton.

"No worries, not worries at all, it just seemed you two would never stop if I hadn't intervened." Queen Toriel said, smiling at the yellow skeleton, the skeleton smiled back.