(Y/N)'s pov
I walked to a random au. I walked around the forest and saw a creature. It looked plush-like and brown. I walked slowly towards it. "Um, hi?" I said. She looked terrified. She looked hurt. "Are you okay there little one?" I asked. She turned into a fire like form. "Huh, you're like me?" I said. I turned into my fire form. She looked surprised. "You looked shocked to see someone like me," I said. I walked towards it and grabbed a piece of cloth. I put it on the the creatures open wound. She turned into it's normal form...I think... I turned back and helped her. "The name's (Y/N)." I said. She smiled. "Keep the cloth, you need it to heal." I said and got up. I walked around the forest until I saw a town. I felt thing tug on my slipper. I look down to see the same small creature. "What are you here?" I asked. She pointed to a tree. "The Tree of Feelings..." I muttered, "I must leave, Mr.Hentai Tenecls will find me." I say out loud. "Well, well, well..." I turned to see a familiar voice. "Oh god no..." I muttered, "I don't want to deal with him..." I picked up the plush and and ran off to Underswap, I was good friends with the Sans from that au.Your companion and her forms. Comment for name. Art not mine.
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Rainbow! (Undertale au x Sans!Reader)
Fanfic(Y/N) was a Sans from an au that was corrupted by a virus. She destroyed the virus but was the only one left. It gave her elemental powers. She travels around aus until she finally got the attention of a certain Sans.