~Why do you care~ [Underfell Sans X Reader] [•COMPLETED•]

~You?~

~Readers P.O.V~

"Error?"

Error stepped forward, hesitantly.

"After I killed.. Many resets later, I went to Gaster and begged him to change me. To make me his test subject.. To just make me a better person. But the experiment when horribly wrong. I didn't feel murderous anymore.. Just a need for revenge. But I was turned into this..."

Frisk took another look around the room.

"You did.. All of this? You killed your brother, Alphys, Undyne.. Everyone. The reason you told us that you wouldn't find the Sans here wasn't because you were worried about us.. It was because he was with us the whole time."

He looked guilty as we saw Ink come up behind him and take a stand by his side.

"Error, Did you tell them?"

He nodded.

"Wait Ink you knew?"

"Yes... From when we were kids, he told me."

Error gave a guilty look around the room.

"There's nothing I can say.. To explain the amount of regret I have for my actions. For my brother.. My friends... Everyone. I hate myself every day for it."

You put your hands on the sides of your head, feeling overwhelmed.

"This has gotten so confusing, guys! I'm not even quite sure what's happening anymore.."

You turned your attention to Error.

"Didn't you have your own au?"

He shakes his head.

"Errors don't get au's. And you're looking at what happened to my other one."

You took a step back.

"This is all too much.. Everything. I want to just go back to Fells shitty prison and forget all this stressful time jumping stuff."

"You want to forget us?"

You turned to Frisk, who had a kind of hurt expression on her face.

"That's not what I meant.."

Ink sighed.

"If that's how you feel, we can visit one last au. Then I'll take you home."

You looked up at him.

"Thanks, Ink."

He gave a comforting pat on the back and exited out of DustTale.

"So.. Where to?"

Ink didn't turn to look at you, but responded anyway.

"You'll see."

Frisk crosses her arms.

"I can't believe you want to leave us.."

You sighed.

"I have nothing against you guys.."

She gave you a quick cold glance.

"Sure you don't, betrayer."

She walked ahead, madly.

"Selfish bit-"

Fell put a hand on your shoulder, making you shut up.

"Don't make things worse.. If it helps, I want to go home as well. The boss is gonna beat my ass though."

Ink turned to you both.

"You have a donkey?"

You groan.

"Are you fucking slow"

-Time skip-

-Fell's P.O.V-

"They're still at it?"

I nodded at Ink, across the camp fire.

Frisk and [Y/N] have been loudly arguing for ages now.

-Readers P.O.V-

"This is all because you don't want me to go home! Grow up and realise that everything doesn't rely on the poor wittle time Angel."

She glared coldly at you.

"Well at least I'm not afraid to make a move!"

You scoffed at her, knowing exactly who she was talking about.

"I don't have a thing for Fell-"

She huffed, cutting you off.

"Oh you don't? Then you wouldn't mind if someone were to.."

You saw the mischievous glint in her expression and narrowed your eyes.

"What are you doing.."

She grabbed the front of Fell's shirt, suddenly.. And kissed him.