Gaster Blaster Sans

Just the beginning

Warning: I am not good at puns so Sans won't make too many puns. I can't make up puns like other people can. You have been warned.

Alphys' POV
I was watching some anime when a knock on the door suprised me. I paused it and answered. What suprised me even more was that it was Sans.
"Hey, Alph. Forgot something from when Paps and I visited. Y'know, to watch anime," Sans stated.

"O- oh. O- of course. C- come in," I replied, opening the door further. "I- ignore t- the mess. I- I was p- planning t- to clean it up," I explained, embarrassed.

"Don't worry 'bout it, Alph. My room's always a mess," Sans chuckled, wading through the clutter. His foot caught on something and he fell into a wall. A small bottle of a liquid I was experimenting on his head, smashing instantly.
"O- oh my God! Sans, a- are y- you alright?" I asked, offering him a hand. However, he refused.
"Yeah, Alph. I'm alright," he replied, standing up and getting what he came for.

Sans' POV
I didn't feel well at all. I felt sick and the room was spinning. My head was pounding but I just ignored it.
"See ya," I said before leaving.

Time skip

I arrived back in Snowdin and I felt exhausted. I passed by everyone until I got home.
"Hey Paps, I'm back," I called

"Welcome back, brother! Did you get your thing? As you said, your puzzle can't work without it!" Papyrus yelled from the kitchen. Guessing he was making spaghetti, I lay down on the sofa before dozing off. However, I couldn't sleep, despite being bone-tired. My bones ached.
"Sans, dinner is ready! Come get it before it gets cold!" Paps shouted.

"Coming!" I replied, shuffling off the sofa and dragging myself into the kitchen.

"Did you put a lot of back-bone into it?" I asked, laughing slightly.

"SANS, STOP IT WITH THESE PUNS!" Paps screamed.

"Ok, ok. Any who, I'm not really hungry. Can you just put it in the fridge for me?" I requested, suprised that I wasn't hungry.

"Sans, don't you dare go to Grillby's without eating your spaghetti!" Papyrus ordered.

"I won't, I'm gonna go catch some zs, k, bro?" I yawned before going upstairs and entering my room. I then flumped down on my bed and stared at the ceiling. My head hurt and I felt sick. Maybe I should call Alph about it. Before I got up, my everything started hurting like hell. I held back a wail and called for Paps.
"What is it, Sans?" He responded.

"Can you call Alph? I'm not feeling too hot. You could say I'm-" I started.

"Don't even finish that thought, Sans!" Paps interupted.

"I'm chilled to the bone." I finished.

"SSSSAAAANNNSSSS!" He hollered as I laughed, "she said she's on her way. Do you want me to have a look?"

"Nah, I'll be fine," I lied, hiding a few grunts of pain. I felt bumps form on my head, which was agonising. Then claws grew on my fingers. Also, my tail bone became longer until it reached the floor. I couldn't help it, I collapsed, wailing in agonising pain.
"Sans! Are you alright?" Paps yelled as he sprinted upstairs. Whatever was happening to me, I didn't want anyone to see. I yanked up the window and crawled out. Snowdin was empty. That's a relief. Cautiously, I jumped out, landing softly in the glistening snow. The moon made it look very pretty.
"Sans!" Paps called out to me, seeing me out the window. I darted into the darkness of the dense forest.