Not bonely anymore. (Underfell!Sans x Insane reader)

Visits.

Thank you.
For the views.
I'm not dead.
I'm gonna update moar.

So basically...
(Y/n) means your name.
(L/n) means your last name.
(F/f) means your favorite food.
Matchmaker's preferred name is Simone, but she has no cannon name.
Katic is Matchmaker's sister, but nobody, not even her knows her real name.
Matchmaker is like the Info Chan of this book. Nameless and mysterious.
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You stumbled forwards, passing through a cloud of white. Everything was blank, before everything faded into your vision. You quietly snuck up behind someone who appears to be sitting in a chair of sorts in font of a huge screen. "Heya. I know your there, (Y/n) (L/n)." She flicked her ears in your direction.

You didn't know who she was, but she knows too much about you. "Who are you?" You demanded, needing an answer. "Katic. Katic Sansify. I know your wondering how I know this. Me and my sister monitor timelines to make sure they can handle themselves. Your timeline has been unstable so we had to make sure it doesn't break by looking into info about it."

A drop of sweat rolled down your forehead. "Make yourself at home. I'll explain more later." She said before getting off her chair and disappearing into a wall. Might as well explore right? You opened a door and almost fell over. Why is is kitchen so fucking modern and nice?! You opened the fridge and pulled out a few ingredients for (F/f). Was she expecting me?

About 40 minutes later, you were cleaning up the remains of the dish you cooked. Katic walked into the kitchen, standing right behind you she started to explain everything, so you sat down on the now clean counter and listened. "This is the space between universes, timelines, and reality. Me and my sis, Matchmaker, live here mainly." She purred. "We monitor the timelines here and make sure none... Well most of them aren't destroyed or collapse on themselves. We will occasionally pop in and shift something slightly to alter the outcome."

You chuckled a little. "So what your saying is that your like the goddesses that keep the universe going? Hah!" You couldn't believe they were goddesses. She quickly snapped back a reply. "Would you rather explain how you are between universes? Would you rather explain how you got here? We have a few amulets that let us travel through timelines and universes at will. Do you wanna go on a tour just so you could be proved wrong? You picked a fight with the wrong cat." She gripped your wrist tightly. A pressure built up on you. You blinked and looked up. You weren't there anymore.

"what did I tell you about messing with timelines? oh well. not my problem." Papyrus walked off. "Wait holdup, was Papyrus wearing a hoodie? And not hostile towards me?" You asked. "Underswap Papyrus is a close friend of mine. Only Underfell Papyrus is hostile. You are from Underfell. We are in Underswap. Proven wrong yet?" She purred.

You wandered off in the only place you know. Snowdin. Everything was shifted. Papyrus was lazy, Sans was energetic, Chillby's was now 'Muffet's', and nobody was being rude or hostile towards you. You grumbled in defeat. "Let's go back, you aren't supposed to be in this timeline." She hastily said. Before you could even blink, you were back.
A black cat with jet black hair was sitting in the same chair, looking at the screen, a worried look in her eyes.

"You need to go back. Now. If you ever need to come back, just press your bracelet. Don't bring anyone else here. Don't give anyone the bracelet." She pointed at the bracelet Sans had given you before tightly gripping your arm and forcing you back to your own timeline. She then disappeared without a trace.