Darkness' Eternal Bride (Gaster x Reader)

Chapter 3

Angry and childish scientists

That day you and Gaster surely got to hate each other even more than you would have expected.

At 9:00 am you two were both concentrated on some files about the Core. Or at least, you tried to concentrate: there were little information about the building in progress.

You couldn't really know it, but you were still sure that he put little information on purpose. For what reason, you really had no clue.

Gaster noticed your stressed look: after all, you were focusing on almost non-existent information, and laughed under his breath.

That way you won't be able to do much, and the Wizards will recognise MY work, not yours, he thought.

He still thought that if you had to work with him, you would have been given some credit (and it was completely legit), and that was totally something he would rather not let happen.

However, you noticed his reaction, even though he tried to hide it from you.

Oh, so that's how things work here, is it not? As you wish Doctor Gaster, let's open the dances, you thought

You stood up and acted as if you were thirsty, gaining his attention like you wanted.

"Where are you going?" he asked, already suspicious.

"Oh, I'm feeling a lot thirsty, and I was thinking I could get myself some coffee. Is there a coffee machine here?" you asked with a fake worried tone.

He actually pondered over the question and looked at you before answering.

"...it's on the right of the office, near the bathroom" he just said.

You got out of the office and finally let out the evil smile that was shaping on your lips.

Oh, I'm such an evil genius, you thought.

You directed towards the right, and in fact found the coffee machine. You put it in function and prepared two cups of coffee.

In one of these however, you put four teaspoons of salt.

Doctor Gaster, I wonder how you'll like my new recipe made from coffee and salt, I called it "Poison the Scientist"!

You grabbed the "poisoned" coffee, making sure to recognise it by grabbing it with your left hand, and went back into the office.

As soon as Gaster noticed two cups of coffee, he looked at you with a questioning look.

"Are you THAT thirsty?"

"Oh no, just thought I could pick you a cup of coffee as well" you said with a fake tender smile.

And in fact, Gaster was surprised by this sudden tenderness. You usually shoved despicable smiles, and it was unusual for you to show some care.

You gave him the coffee on your left hand and returned to your desk, quietly observing how would he react once he drank the coffee.

He slowly sipped the liquid, and in a fraction of a second, he widened his eyesockets and nearly choked, trying to suppress the urge to vomit.

This is the WORST coffee I've ever drunk! How is it possible?! Is the machine malfunctioning? he thought.

Meanwhile internally, you felt like a little devil who had succeeded in her mischief: you even thought that horns and a red tail could grow on you, feeling nastier than ever.

You calmly drank your coffee, acting as if you just noticed Gaster's disgusted expression.

"What's wrong?" you asked, as if you knew nothing.