~(Y/n) Pov
~Flashback
"Now (Y/n), this serum will give you the power to summon a weapon from your soul. Now I don't know what it will be but we will soon find out," Dr. Gaster explained.
"Why are you testing it on me?" I asked him.
"I need a human the age of 10," I fit that perfectly. "Now this might hurt," he grabbed my arm and injected the (F/c) serum with a needle. My eyes teared up from the pain. My eyes turned from (E/c) to (F/c), then back to (E/c).
"Dr. Gaster, what happened?" I asked confused.
"Amazing, your eyes changed color, try to summon your weapon," I nodded and tried to summon it, but nothing happened.
"It's not working," Dr. Gaster thought for a moment.
"Hmm, I wonder," he summoned a bone and threw it at me. I threw my hands up to block it from hitting me, but there was no pain.
"Why did you do that!? What if it hurt me!?"
"I had no intention to hurt you, that bone I threw was a fake. I was hoping fear would make you summon your weapon. Now (Y/n), you mustn't tell Sans about any of this," I nodded.
"Ok, Dr. Gaster,"
~Flashback End
"Sweetheart, how did you do that?" I was told not to tell him, but kinda too late for that now.
"When I was 10, Gaster injected some (F/c) serum into me, giving me the power to summon a weapon, I could never summon it until now," I explained. Sans eye started to flame up.
"He did that!? I told him not to do shit like that to ya," to be honest, I know what Sans is capable of and he kinda scared me when he gets mad.
"Why did you tell him that?" I asked, his eye calmed down and his cheekbones dusted with red.
"Uh, reasons, Sweetheart, cmon, let's get you to my place, your lips are turning blue," it was freezing out here. I felt something heavy on my shoulders, I saw it was Sans' jacket.
"Thanks Sans,"
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Word Count:358
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An Old Friend ' Underfell Sans x Reader '
FanfictionYou and Sans had been friends since you were little, when the monsters had to leave, you were really upset that your only friend, Red as you called him, had to leave. Will he remember you after 7 years of being in the underground? Or will he just fo...
