AU Sans Oneshots

ButtonSwap!Sans X Half Other World Reader

   ---- Half Love & Half Friendship ----

You and Sans had become the best of friends as soon as he moved here. But you kept one secret from him to keep him safe. Or at least you thought that would keep him safe. 

He was back and he wanted Sans.

You disappeared into the other world to keep an eye on him every night. You didn't have the buttons sewed on but you made it look like they were. He knew that you were gonna do something so he sewed your mouth shut. 

The next night you knew Sans knew something was up about you so while you two were walking through the garden that other Gaster made for Sans he asked you, "(Y/n) what's wrong with this world and why am I here?" 

You tensed up fast cause you knew he was watching you through the window. So you shrugged it off and continued to walk with Sans listening about his day with him. "HE COOKED ME BREAKFAST TACOS WHICH THEY'RE CALLED BURRITOS. THEY WERE DELICIOUS THOUGH BUT I STILL PREFER TACOS." He continued about how great they were. 

When he had to go to sleep you snuck back into the real world and painfully removed the thread from your lips. Blood got everywhere and so your grandma heard your muffled screams. She walked into the bathroom and saw what she didn't want to see after her little sister went missing. 

"(Y/n), Honey I thought I told you to never go through that cursed little door. Now look at what he's done to you I know your father was from the other world but you are not to ever go there. I promised your parents to protect you from going there. But old age has caught up to me and I can't even protect the ones I love." 

Then you hugged your grandma crying on her shoulder and she then said, "Promise me you won't go there any longer. I can't protect you from him. He will take you away from me just like he took my sister I can't lose you too sweetie." You hugged her tighter but soon let go and walked over to the bathroom door trying your hardest to keep yourself from breaking down. 

"I'm sorry Grammy but I can't do that I must save Sans and if I can't do that then I'll come back but once I know I can't save him I'll come back to you Grammy. I love you." You then ran out the door and towards the old house, you and your family used to live in.

Sans went through the small door to go and tell his other brother that he would like to stay with him. But he soon saw someone on the other side of the door. "(Y/N)!!!!! I CAN'T WAIT TO HAVE FUN TODAY, HOW ABOUT YOU? I ALSO HAVE GREAT NEWS I'M STAYING WITH PAPY SINCE HE PLAYS WITH ME. I FEEL SO NEGLECTED AT HOME THAT I DIDN'T THINK TWICE ABOUT AGREEING WITH HIS TERMS. MWEHEHEHE!"

Your face only showed horror you couldn't talk otherwise he'd hear you cause he hears everything through the walls to the furniture. 

You grabbed his hand and made a dash for outside and took him to the fallen log to talk to him out of view of him. "Sans you can't except his deal he will keep you here forever and once he's plumped up your soul he'll kill you in this secret room behind a mirror and keep you there until he's ready to eat your soul. And once you've died in that room and whatever is left of your soul he'll make little balls out of the remnants of it. You'll become a ghost inside that room... I only know because that's where my Grammy's sister is. I saw her once. I was put in that room to be 'punished' for trying to tell you the consequences of being here and the truth of what he's going to do to you." He only looked off into the distance when he saw that white dog he so much hated. You saw him too and smiled. 

"TOBY COME HERE, BOY! ", You yelled out. The dog came running over and jumped up into your lap. "What is it girl of both worlds?" "I wish for your help. I would like you to help me bring Sans back to the main world. He doesn't belong here." The dog nodded and looked to Sans.