[Undertale] Sans X Reader - Repeat, Eternally

Chapter 47 ~ Gaster's Current Agenda

"I must be a certain type of fool to have thought my de-involvement with them would stop the Pillars... the first one came, just as it did before...if I'm right, the second one should appear within a week... it always does, always did..." Gaster mutters.

"I did as you said. I hurt them." Sans appeared from the shadows. "Why did I have to?"

"It's to prevent needless death, Sans. As much as we're both disgusted as to what we have to do, we have to make _______ feel pain. Emotional pain. We have to make them hurt."

"I don't like this." Sans sighs, resting his hands on a console.

"It's a necessary evil. To save _______, this is what we must do." 

"I only hope we're doing the right thing..." Sans chuckled weakly. "If not, then I'm breaking their heart for no reason. Time I'd rather be spending with them, than using to break them." 

"If we can break _____'s DETERMINATION, we can SAVE ______." Gaster said. "Get back in there...and do some damage." 

"I know. I have to...I have to." 

Sans disappeared, and Gaster slumped in his chair. He was weak, sending his son to murder the will of the person he loved. Of the person they both loved. 

But, it was necessary. If they could break that person again, nobody would ever have a problem again. It would save them all... and they'd still be there, just not responsive...

That was the part he didn't tell Sans.

He was going to make them dance again.