Au Sans x Reader Oneshots

Don't judge a book by it's cover

Sans x Demon!Reader        (Chara's a boy here k? Frisk is still gender neutral)

                                                                  Your Pov

You were Chara's younger sister, because of that you've been kicked out of lots of au's, that's right, chara and I can teleport through au's. You'd think that being chara's sister it'd e awesome right? Demonic powers and such but no, because of Chara's genocidal ways, ink even teamed up with error to try and kill us, we were that hated, Chara ended up killing them, but I was a pacifist, obviously no one would believe it... Everyone else sees Chara as a demon but he's been the sweetest brother ever, he's just overprotective. I sigh from being kicked out of yet another au and I thought to myself 'I've tried allot of au's but have I ever tried the original?' now that I think about it I haven't, I decided to go, not to stay of course but I like waterfall's scenery unlike Chara who found them boring, well It's boring to live in nothing but whiteness, yup, I live in the multiverse with Chara in a house which I don't know how he did it but whatever, magic. Anyway I decide to open a portal with one of Chara's spellbooks, I'm not as powerful as him so I have to stick with books. I walked through the portal to reveal waterfalls, it's even prettier in undertale, I was alone so I walked around poking the echo flowers until I found a bench with a quiche under it, I sat on the bench and sighed, taking in the noises of the water falling, then footsteps but I ignored it, knowing that no one can come here normally, you need lilies or something, I ignored until I felt myself floating, I opened my eyes to see sans, the judge of undertale, cool right? Nope, he threw me onto the wall with his magic, twice, before dropping me on the floor, I slowly started to get up only to feel a foot push me back down. "Stay down demon, didn't I tell you not to come back?" He said with venom laced in his voice, wait but I've never been here before, I got thrown out of my thoughts when he pressed harder on my back with his foot. "Answer me Chara." Wait, ohhhh I'm so stupid, I literally look like a female version of Chara. "I-I'm Not.... Chara." I said between breaths which was really hard, he's cutting off most of my air flow. "Don't lie to me you evil thing, just because you grew up doesn't mean I won't notice you." He growled giving me a death stare. "I'm gonna have to finish you off, I spared you last time, but not again." He said as he took his foot off my back but started attacking me, once again, I wasn't as good as chara with dodging things but it all went wrong when he slammed me onto the wall hard causing my bracelet to burst and fall into the river nearby, that was all I had left from my parents before they disappeared.

 Flashback

"Chara, Y/n, come here, I have something for you guys!" I heard my mom yell from downstairs, I was drawing with chara but we both dropped our pencils and ran downstairs, we saw mo with two things in her hands, a bracelet and an amulet, they both had a half of a heart on them, mom gave me the bracelet and chara the amulet, the two halves fit together to make a full red heart. "there, they match, see?" Mom says. "Thank you mommy!" I exclaimed and chara just said a simple 'thanks', he was 16 while I was 9, I jumped on her and hugged her, she chuckled and hugged back, chara soon joined. "I love you both." Mom said lovingly, we heard a grumble in the corner and saw dad looking jealous. "We love you too daddy!" I said beckoning him to come join our group hug. "And here I thought I was left out." He said and came to join us in the hugs, we were a perfect family.

Flashback end

I kept looking at the river as rage slowly began taking over, he dropped me on the floor and I ran closer to the river, there was no sign of my bracelet, not even the heart, at this time I was so pissed off that my eyes turned red. "Hey demon I'm not finished with you-" "I'M NOT CHARA!" I screamed, cutting him off and lunging towards him, punching him across the face, he stumbled back, I gotta admit that did hurt, felt like I punched a rock, but it was worth it. "Sure I look like him but can't you tell the difference between a boy and a girl?! Look at what you did! That was the only thing I had left from my dead parents! You ASSHOLE!" I went on and on with the bad names until my tears got the better of me, my legs buckled and I cried loudly on the floor, curled up in a ball.