His skull was pounding; god, why did it hurt so much? Sans cracks open his eyes, surprised to be met with the old door at the edge of Snowdin Forest. He was sprawled in front of it, snow piled up around him. It was in his hoodie, soaking through it and making him shiver from the frigid temperature.

Fuck, there was even snow in his pelvic girdle!

After hurriedly ridding himself of as much snow as he could manage, Sans looked up at the door. It was bound shut with thick vines, and as Sans walked closer to inspect it bulged forward. Sans stepped back, arms raised to defend himself. After assuring himself the door would hold, Sans crept forward.

Somebody was trying to force the door down.

"Hello…?" Sans whispers, hearing a growl on the other side. The door bulges forward again, and this time Sans made out the audible 'THUMP!' as something large and heavy slammed against the door.

"Knock knock." Sans knocks on the door, the person on the other side suddenly silencing before answering;

"Who's… there?" the voice was familiar, why did this monster sound like Toriel? Toriel lived on the surface, with the rest of them.

"Alabasta." Sans answers, pulling the desert kingdom from some random anime Alphys had made them watch? What was it about again? Pirates?

"…Alabasta who?"

"Alabasta-you out if you tell me what's going on." Sans replied, hearing a small chuckle on the other end.

"That was a good one, alright; untie the vines and we'll see what I can do for you."

Sans walks forward to the vines, loosening them enough for the door to crack open. His instincts instantly flared, and he teleported backwards as a large furry paw shot through the crack, barely missing his jacket. A fireball formed in the paw, aiming at Sans as he fell on his ass.

"What the hell are you doing, lady?!" Sans demands, scrambling backwards as the fireball grew larger.

"What's best for you, my child." The lady responds, and Sans' eyes widen. There was no mistake about it.

"…Toriel…?" Sans questions, and the hand freezes before the fireball completely fizzled out.

"…no. What am… what am I doing?" Sans stares in shock, watching as the hand hung limply against the vines as the voice continued to talk.

"I…I am so sorry. This is not who I am. This is not who I- I and my friends, we have been trapped here for so long, with so little, that we have forgotten who we are. Yet, your words remind me of another human who had passed through here."

'Another human?' Sans thinks, slowly picking himself up and walking back to the door. 'Has Toriel gone completely insane? Since when was I a human?'

"Another human who found it in their hearts not to fight nor flee. And now, after everything that I have done… oh child." The large hand grabs Sans by the top of his head, pulling him forward and forcing his head up.

"I know you cannot forgive me. I know that what I have committed is unforgivable."

'What the hell is Toriel on? What shit has she done that I couldn't forgive? And why is she talking to me like I'm the kid?'

"But please. Please do not forget me. Tell me you will save my friends and myself from this wretched place. No one here deserves what has happened to our home. Please. Promise me you will save us. Promise me… will you not?"

Not knowing what else to do, Sans agreed: "I promise."

The hand on his head tightened, pulling him closer. "Look me in the eyes when you say so."

Sans' eyes widen at the sight of the monster in front of him. It was Toriel, but her eyes were empty, blank; tears running down her face. No wonder she had mistaken him for a human, she didn't look sane enough to tell the difference.

"Promise me I won't die here." Sans automatically saw her stats pop up in his vision, and he was terrified by what he saw.

TORIEL DREEMURR

LV: 20

HP: 3500

ATK: 80

DEF: 80

TOO FAR GONE TOO TURN BACK.

"I-I promise…" Sans stutters, scared stiff as he stared at the women who was clearly not the Toriel from his universe.

"Aw… thank you child. You are good to think well of me; despite what I have become. Now go, quickly, before I forget myself again." Toriel lets go of Sans, and he quickly steps away; the door shutting. Sans waits for a solid minute before slowly backing away, turning around once he was a good 10 steps away. He waited with bated breath for the insane woman to break down the door and dust him.

When no rabid goat-lady came, Sans continued forward cautiously; listening and focusing on his surroundings carefully as he moved forward. Clearly, this was not his universe; he had to figure out where the hell he was. He reached the first clearing, noticing Papyrus in the distance. But… he looked different.

His teeth were sharp and jagged, blood covering his teeth and the entirety of his front. He held a pot of what-looked-like spaghetti. While it hurt to fear his own brother, after his experience with Toriel he was too nervous to approach him. He ducked through the trees, continuing past Papyrus and towards the direction of his hotdog/sentry station.

Taptaptap…taptaptap…taptaptap….

"What the hell…" Sans mutters, continuing through the trees until he reached the station. It was empty, and Sans approached it cautiously, slipping behind it to inspect it.

'Relish, mustard, ketchup, and other condiments. Wait…' Sans notices a hot dog, and he picks it up to inspect it.

Just as quickly as he picked it up, he dropped it in disgust.

It was covered in severed fingers, and tufts of white dog fur. Instead of ketchup, blood coated it. Sans choked back a gag, stumbling backwards and into a wall. Sans stiffened up in terror.

There was no back wall of this sentry station.

Sans whirled around, only to be met with a horrid surprise.

It was him, but with a massive hole in his skull with cracks running off it. There was blood splattered on his blue hoodie, the fur on the hood having been ripped out, leaving just the bare fabric. The white shirt was torn to shreds, splattered with blood. And he was HUGE, or at least, big compared to Sans. He had at least a solid 8 inches on Sans.

"Well, well, well? Who're you?" the other him smiles, his left eye socket lighting up a chilling red-orange. Sans backs up, his waist hitting against the sentry's counter. The other him follows him, pinning him up against the counter.

"Well, it doesn't matter much; now does it?" he chuckles, pinning Sans down against the sentry's counter by his neck. Only then did Sans notice the huge axe he held in his hand.

"ONE HEAD-DOG COMING UP!"

Sans blacked out right as the axe swung down towards his neck.