Chapter Text
The kid did not give up.
They were probably going on their…fiftieth run now. Well, Sans had lost track of the attempts the kid had tried to kill him. But they did not give up. And he was exhausted.
Every time they reset he knew it had happened, but he couldn’t remember exactly what went down. He knew he couldn’t give up. He had to have as much determination as the kid. But he really couldn’t keep this up. The kid was figuring out his moves quick. They’d beat him soon.
He slammed the kid into the ground. Their HP dropped low. They rushed to eat the ramen noodles that they had blatantly stolen from Alphys. Sans felt his teeth clench and waited. They swung, but he always dodged. The cycle was endless. But he needed to keep going.
Bones soared towards the kid and they hit a bunch of them before making it through that round of attacks. They’d die this time. But who knew about the next? Who knew when he finally died and they continued on? Everything he had done would have been pointless. It was all pointless. But he couldn’t give up. He needed to kill them. Maybe they’d finally reset. He needed to keep going.
The gaster blasters got them, in the end. He was allowed a second of respite. There was little hope left in him that they’d reset. There was only one thing left to do that he could hope would cause them to give up. But he wanted to save that for the end; a last resort.
He blinked and then the kid was in front of him.
Huh, must’ve killed them again.
At this point, his dialogue was useless. Yet he continued with most of it anyways. He would say what he had to say. The kid would ignore it. He knew they didn’t care.
This time, the kid was doing their best. Sans was sweating. They were almost at his special attack. The vial in his sweatshirt pocket suddenly felt so heavy.
They were smirking at him. He was so tired. He needed to stay awake. But…he had them corned. They wouldn’t attack him. It was fine to just…shut his eyes for a second…
999999
Fuck, they hit him. He was hit. He was going to die. Fuck!
No, he wouldn’t die. The panic dissipated. He grinned.
“Welp,” he reached in his pocket. “Guess you leave me with no choice.”
He drew out the vial. It was red like the cut across his chest. The kid seemed surprised. His grin grew.
“I wish I could say sorry. This is really going to be awful for you. But,” he paused and looked them dead in the eyes. His own eye sockets empty. A void. “You deserve this hell after what you’ve done.”
He raised the vial in mock salute. The cut on his chest was radiating in pain. But this was his last chance. His only option right now. He drank it. It burned.
He could feel it changing him almost instantly. His magic and his very bones absorbing it. He winced and exhaled. He would be vulnerable if they decided to finish him off right now. He cracked an eye to look at them. They just stood there, an indescribable expression on their face.
He laughed. It echoed in the hall. Somewhere along the way he had fallen to the ground. It was awful, and yet invigorating. It felt like it was searing him from the inside. But at the same time, he felt something inside of him return. Power. Strength. Determination. It was changing him.
That was when his bones snapped. He screamed. What the fuck, what the fuck. The bones were moving. Shifting and growing in him. Holy shit.
His left eye burned in its socket. Magic expelled everywhere. It was all so much. He felt his spine grow. Holy fuck, this needed to stop. He couldn’t handle this. When would it stop?
Sans clutched at his own jacket and felt as his phalanges sharpened and pierced the cloth. He yelled again as his legs elongated and scratched at the tiles. His body felt like it was no longer his own. He didn’t think this would happen. He had no idea what this was. This was not worth getting rid of the kid. Why the fuck had he thought this would be a good idea?
But it was far too late. The liquid was inside of him and causing his magic to riot. It was wild enough that it decided he needed a completely new body to control it. At least, that’s what he guessed. It was beginning to get hard to think through the changes that were happening to him. He could feel something growing from him and ripping his clothing. Most of his clothing had already fallen to shreds around him. What was left was scraps of his hoodie and shorts. It revealed the bone beneath, bare to the peering eyes in front of him.
At that point, he was on all fours. It felt somehow more comfortable. But the stuff wasn’t done with him. He felt his teeth grow inside his mouth and stretch his maw. He clutched at his eye sockets and dug into them as if it’d help. He stumbled on three legs. He wanted to scream again but all that came out was a muffled growl.
His mind felt fractured and confused. All it knew was pain and fear. And anger. So much hatred. The hatred was so focused on one thing only.
Magic exhaled from his maw. It swirled around like smoke. His eyes were both burning with the excess of power. He managed to stay on all fours while the remainder of the change rippled through him.
He was so much taller now, but that did not even process. All that mattered was the small demon child in front of him. He needed to kill it.
A roar erupted from him. He let the ground shake around him. His eyes focused on the child and he snarled. They flinched. He charged.
They barely managed to get out of the way before the large skeletal beast collided with them. Instead, his claws skidded on the tile and into the wall, but he was quick and righted himself in his new form, turning back around to face the kid on in the hall.
Something burned inside him and, on instinct, he opened his jaw. A blue beam burst from inside and shot wide, breaking a pillar before searing the human. They screamed, burning from the blast. But they still stood tall. Their knife shaking in their hands; useless. Their clothes burning and their skin charred.
He huffed and approached them slowly. They took steps back. Were those tears in their eyes? He didn’t even notice. He needed this child to burn in hell.
His eye flashed yellow and blue rapidly and blue magic formed around the human’s soul. They struggled against the gravity but it was useless. The large creature that had once resembled Sans was taking his time towards them. They had no way out.
The claws scratched against the tile. His tail whipped back and forth. Yes, they were dead. Very dead. And they felt so much fear suddenly. They didn’t know this would happen. They had no idea…
The creature stopped. He extended his neck towards them. The kid flinched as he got a full view of his huge teeth, now the size of one of their arms. He growled, pulled his head back and the humming came again.
Trapped, all they could do was watch as the blue beam exploded towards them and impaled their soul. They barely felt claws rip into their body before their soul completely cracked and they died.
The creature howled in victory, claws stained with blood. It was finished.
The world stopped and then –
[RESET]