Sansational! (Sans X Reader)

Love Potions! (Gaster!Sans x Yandere!Reader)

There he was..again....

He's caught up on drinking and drinking. Then after that, he meets up with Toriel, who of course, scolds him for drinking too much and smelling like a god-forsaken corpse. But, even though she's scolding him... Afterwards they always have a heartfelt talk to each other... Then.. Suddenly laughing and giggling with each other..

Ugghhhh, this is making you all... gummed up inside. What does she have that YOU don't? Like- You have the DETERMINATION, but he hardly recognizes you at all anymore! You used to be rockin' budds! What the hell happened with that!? You used to both have contests in motorcycle racing, he used to drive you in his car the whole night long, not even minding the time, and also you both hang out, almost everyday! Where did all the fun go? It's like...he just.. threw you away... Just like that...You sighed.

BUT! YOU REFUSE TO BACK DOWN! Thoughts of hope filled you up with determination.

At the moment, you were on top of a tree, spying on Sans movements in Toriel's house. You wanted to know what had become of your relationship with him. AHE- I MEAN TECHNICALLY YOU WEREN'T IN A RELATIONSHIP WITH HIM. Is what you thought. You wish you were, though. Don't deny. I can see through you, easily. ..

Boy, your legs were getting tired... and.. wobbly..? SHI-

RUSTLE RUSTLE... THUD!

"hey tori, did'ya hear that?"

"It sounds like it came from the outside. It sounded... quite painful."

For f*ck's sake. You immediately retreated but you accidentally left your binoculars back at the tree. What a loss. But it's still better than being caught.

Having one last glance at the window, your heart is filled with... LOVE.

That night, something... snapped inside of you.

...

You stayed awake for days, conducting research on compatibility, likeness, infatuation.. Love. You had to find the answer. You had to make him fall for you. But how?

Then, an idea popped into your mind.

Alphys.

You quietly chuckle to yourself as you grab your things to head over to Alphys' lab.

....

"Oooh~ Alphys!" You beckoned eerily. What have you become.

"O-o-oh, ___-______---?" Just as Alphys came out of the CR. Just looking at you, her expression changed into a rather grim one.

"__-_____? A-a-a-are y-you o-ookay? Yo-your ey-eyes ap-app-appear to be crimson red a-at t-the m-m-moment." She was slowly backing away from you, while you just gave her a smile.

"Oh! Never been better... Say.. Have you ever heard of something like... I don't know... A love potion of sort? " You playfully dangled a swiss knife on your fingertips, swinging it threatingly.

The lizard gulped in horror, slightly trying to reach an emergency button. But you immediately threw the knife at it, successfully destroying the button. Your knife wasn't all that sharp, but you were.

"Is there going to be anymore complications, Alphys?" You dangerously approached her. "Y'know, I really don't want anybody getting hurt... After all, all I ask for is this one thing... right?"

"A-a-a l-love p-p-potion... " Alphys ran to the desk littered with apparatuses, chemicals and herbs of sorts. Deciding to submit to your wishes.

......

"Tori, I just don't know how to say this to her. I'm a damn mess and she doesn't deserve an alcoholic wreck like me." Just as Sans was about to drink from a bottle of beer, Toriel swatted it away.

"Then change! Rather than being what you call yourself an alcoholic wreck!" Toriel crossed her arms in dismay.

"How can I, Tori? She already knows every filthy part of me... I doubt she'll ever want a guy like me. "

...

You were impatiently waiting for Alphys to be done with her work. Constantly walking in different directions over and over again, in an endless cycle. You were plotting on how to give him the finished product, without noticing its true nature.

Perhaps you could put in chocolates. Maybe just outright give the fluid to him. Nah nah, bad idea, bad plan, forget about it.

You hear a whistling sound coming from Alphys' direction. It seems that it's done. A wide grin crept on your face as Alphys handed it over to you.

You were finally getting what you always had wanted.

...

"Alright, alright. I'll tell her for f*ck's sake, Tori."

"LANGUAGE, SANS. " Sans groaned, not really giving a sh*t. He got up from chairiel and headed out to find you.

Unexpectedly, he found you a lot sooner than expected. Although, you aura was... different than usual.

"H-hey, _____. I've got something to tell you. I- uh- *hic* I- .... _______?" Something was definitely off about you. You weren't doing anything, not even looking up to meet his eyes.

"______?" But he was greeted with nothing but silence. "Hey, speak to me. "

You lifted your hand to give him a bottle of water.

"Drink it. You smell like alcohol like usual. "

Confused, he took it from your hand. He examined the bottle, curiously, but drank it anyways. As he finished drinking most of it, you lunged at him to give him a kiss. Although, as impatient you are, you already tongued him. He didn't seem to fight back though, he quite enjoyed it for a fact. He succumbed to the kiss. As he did, he was already dominating over you. Your power is 100 years too early to be dominating him.

Breaking away from making out, you put your forehead unto his, arms wrapped around his neck.

"You're finally mine... "

....

Extended ending:

Back in Alphys' lab

"I-if s-sh-she o-only kn-knew it was only boiled water."