Writer's Note: I got burnt out on Redemption, so I took a different approach to change things up a little. Enjoy this gaster blaster!sans story, and yes, this is going to be a full thing that I will finish. Title will make more sense later on.
A cold wind blew through Snowdin that night, stirring up puffs of snow that occasionally blew into those unable to dodge them. The news had just gotten out that monsterkind had been freed by a young human named Frisk. As countless monsters crowded the streets in effort to get to their destination first, Sans and Papyrus were inside their home, packing. Sans called to Papyrus, "Just finished, bro! I'm heading outside, come join me when you're done!"
Papyrus simply shouted, "Okay, Sans!" and continued packing.
Sans closed the front door and went off towards his old sentry station when buzzing filled his ears. He collapsed as his body spazzed, and screamed. The noise reached the townfolk's ears as many ran, but others rushed toward him, desperate to help their friend in any way they could. Greater Dog pinned him down, as Dogaressa tried to communicate with him. "(Sans, can you hear me? Please, can you tell us what's wrong?)"
"S'fine..I just.." he weakly stuttered, before seizing once again. He screamed, and Doggo wretched. Sans's fingers seemed to be getting sharper, and his slippers were thrown off by the force of his feet shifting. The toes splayed, and Sans's feet elongated. Three ridges formed across the back of his skull, extending upwards. His jawbone stretched outwards, and his lower jaw bifurcated. A row of needle-sharp teeth rose on his jawline. A tail split his shorts, and whacked Greater Dog in the arm two or three times. And he finally stopped. Greater Dog stood up and sighed in relief, as Sans's breathing became deep and even, cyan steam curling out of his mouth. It was at that moment Papyrus rushed towards them, desperate to see his brother.
"Oh my gosh.." Papyrus breathed, "Is Sans okay?"
"(We tried to talk to him, but he was unable to tell us what was wrong,)" Dogaressa explained, "(Papyrus, do you know anything about what happened to him?)"
"No, only that his head kind of looks like the blasters I've seen him use. That's the only part I recognize. Is he at least in good condition, or should we take him to a doctor?"
"(He seems to be fine, but I suspect he may be in pain when he wakes up, or he might have another event like this.)"
"Then it's settled. I will carry him." Papyrus bent down and gently picked up his brother, Sans's tail draping over his arm, swaying with Papyrus's momentum.
They stepped into the clinic, the doctor leading them into one of the many rooms. Papyrus set Sans down on the gurney, and the doctor asked him to have a seat so she could see what was wrong. After a few moments of setting up equipment, the doctor, Dr. Julie, said, "He seems to be fine physically, but his soul..it's filled with way too much magic. Can any of you please recall clearly what happened to him?"
Dogaressa told the doctor of what she knew. "I see," Dr. Julie said, "so then we'll just need to wait for him to wake up so we can know why."
A few hours later…
Sans opened his eye sockets, greeted by the interior of a private medical room in the Hotland Hospital. He struggled to move, but was surprised to see he couldn't. He realized what had happened to him. Papyrus said, "Sans! You are awake!"
Dr Julie said, "Sans, could you please tell us what happened to you so we can help you?"
Sans replied, "Papyrus, could you tell them about the labs for me? I'm a little.. bone-tired right now."
Papyrus said, "Sure brother! But do you want to do that part, or should I?"
"I'll do that part Paps. You just focus on the rest."
Papyrus began to speak.