AU Sans x Reader Oneshots 2

Cheater! Sans x Neko! Reader

Thank you xWolfEmily for your request!

And sorry for my lovely followers, I didn't publish this book for whole two damn years.

Let's go.

Your POV
You were a (F/C) Neko. At this moment, you are really worried that your boyfriend, Sans, has been coming back late on these days.

Everytime you ask him something, he will just ignores you or scolds you for getting through his own damn business.

You were really stressed and pissed as hell. So, you decided to make up a plan. To spy on him and what's he doing these days.

(You and Sans are together about 3 years.) 

~Skip to the next day~

You out on your (F/C) mask to cover your face, your (F/C) hoodie to cover your ears so that Sans wouldn't notice you. You even hid your tail.

When you hear the front door opening, you opened your window and took your phone to take some pics. You looked down and closed the window and landed on the snow.

Sans POV
Hope that stupid half cat and human girlfriend of mine wouldn't know that I am cheating on her. Stupid and dumb cat.

I opened the door, leaving the house and took out my phone and started texting Frisk.

(Sans : 💙 ; Frisk : ❤)

💙 : Hey babe.
❤ :  Hey Sansy~
💙 : Let's meet up. That stupid girlfriend of mine doesn't know about it.
❤ : Really? I am already ready! She is such a slut!
💙 : I know right! She is annoying and clingy. Hell, she is not that cute!
❤: Ugh! Seeing her makes me want to puke!  Well, see you later, Sansy! I am waiting at Grillby's! Bye!
💙 : Love you babe! See you there soon!

Frisk went offline as I shoved my phone into my pocket. I teleported to Grillby's, to get the usual.

Your POV
You were secretly spying on Sans, after you climbed up a tall tree. You saw him texting someone and you decided to look closer.

It was Frisk. You saw one of the texts that Frisk wrote. It hurts your soul and feelings. You trusted her. As a friend and she betrayed you. You took pictures of him texting. After he was done texting, he immediately teleported.

You were angry, betrayed and sad. You want to pour your emotion and pain out. You jumped off the tree, and went to Undyne and Alphys' house.

You ran and ran until you reaches and knocked on their door. You waited for a while until the door was open and you saw Alphys.

You immediately broke down to tears as Alphys tried to comfort you as she calls Undyne. "Woah, kid! What the hell happened?! Come in and tell us everything!"

Alphys lifted you up and went inside as the door closes and went to the couch and cried. "What happened, (Y/N)?" "S-sans! He was cheating on me!" "With who?" "F-frisk.. "

"THAT DAMN LAZYBONES AND THE HUMAN!" "Undyne, calm down. I have a plan. Just follow me so that we can spy on those two." "Okay." "Well. Let's go then!"

~Skip to where they reached to Grillby's~

"Did you see them?" "Wait.. I saw them. They are sitting together." "Really?" You peeked and saw them chatting together happily as they shared a milkshake.

You were shocked that Sans wouldn't do that when you and him went on dates before. You were surprised.

"They.. T-they're going to kiss!" "What the hell?! Let me see!" Undyne peeked thought the window and saw them kiss. "Give me your phone, (Y/N). You have to see this."

You gave your phone to her as she took many pictures and returned to you. You swipe the pictures as tears rolled down your face. "W-why would he do this to me?! I gave him everything! I hate him so much!"

"He is such a bastard. Does Papyrus know about this?" "He doesn't. But right now, let's head back and print them out. As my revenge." "I'll h-help!" "Me too!" "Thanks, guys. You are the bestest friends I ever have. Now, shall we, girls?"

You three got up and sneaked out without any of the monsters noticing you three as three of you left to do the prints.

'Go to hell, Sans. This is what your play with my broken soul. Fuck you and Frisk.'

Your revenge on them starts.

~Skip to the day of revenge by putting the pictures up to the houses with Undyne and Alphys during 7 in the morning~

You, Undyne, Alphys, Mettaton walked together until you heard shoutings. Sans. Too easy. To figure his damn voice.

Luckily I left a note about break up~

You giggled as you past over the monsters with your friends. You could hear them whispering each other, you were satisfied about it. Some were gossiping, laughing at them.

Mettaton saw it and took pictures of them, Undyne fist bumped with you, Alphys patting your back. Until...

"(Y/N)! YOU FUCKING NEKO!"

Sans, huh? It is my revenge on you and Frisk, dumbass.

"What? Happy being exposed your cheating on me with Frisk, bonehead? You could see monsters are gossiping and whispering each other about you. And also, Frisk, fuck you and we are no longer friends anymore. So don't even think to talk to me. For you, Sans, eat shit and go to hell. I am done with you. It is all fake love. We are. Breaking. Up."

You gave him and Frisk middle fingers as you left with Mettaton, Undyne and Alphys. Revenge does taste sweet~

Hope Papyrus sees this.

See what is his reaction. I would live to enjoy his expressions after being exposed.

Well, sorry this shit sucks. Frisk in my story here, is a bad one so if you don't like it, just go away and don't see it at your own risk.

Bye. Author out!