Can I Stay? (Underswap!Sans × Reader)

[27] Don't Forget

Papyrus POV
"(Y/N)?! WHERE DID SHE GO?! I CAN'T LOSE HER AGAIN!! NOT AGAIN!!"

Gaster- or should I say, dad, rush to San's side pulling him into a hug, to calm him.

Yes, I know Gaster is mine and Sans father. No, I don't have all my memories.
After last night, my mind refused to sleep. Somehow I found myself in my old lab outback. I was shifting through paper after paper of my handwriting that I don't remember. The documents seemed to be of some unknown machine, that was also here. The purpose of this device, according to the notes I wrote, is to located and bring back a lost soul. Of course, I had no idea why I wanted to build such a thing until I picked up another journal and a big button pin fell to the floor. I bent to the floor picking it up, it was poorly made in a way that the clip looked like it could break any moment. I flipped it over and it read: #1 Dadster.
I dropped it and fell to the floor as a jolt of pain went through my head.
And I remembered me and Sans working on the pin together, Sans wrote #1 Dad and I added the 'ster' to make it a pun. Sans was mad, but not really and I was laughing with Dad... it was a good memory.
I was hurt, sad, confused, all in one moment, but the most overpowering was guilt. How could I just forget my Dad?! We love him so much and he loved us!
And then I remembered what (Y/N) said... as I was laying on my bed just hours ago:
Sans had just put me in bed and my head was running wild until I couldn't even think straight until I heard her voice speak through, "Enough!" The voices pounding in my head went quiet and she had all my attention, "S-sorry, what I mean is you can't blame Paps... the place we were... makes people forget... That's its job."
Then even more memories plagued me, the place she spoke of was the void. I remember trying so hard to get Dad back, but it became too hard to even remember what I was doing, who I was doing it for, and... I just lost hope, then I did what I do best. I gave up.
And I suppose what they say about 'an old dog can't learn new tricks,' because when (Y/N) left I made the same mistake again.
I was going to say something, really I was! But... she beat me to it... and now we are here.

"You must take a deep breath. The worst thing you can do in an emergency is panic. You know this when you helped (Y/N) before, remember?"

"I-I DON'T. I-I JUST KNOW I CAN'T LOSE HER AGAIN." Sans held onto Dad, tight, crying into his ropes.

"It's okay. You will, you know (Y/N) better than anyone Sans~ Do you truly think she would abandon you?"

"OF COURSE NOT!!" A pang of guilt filled my body.

Sans is so sure. Don't get me wrong I don't believe for a moment that (Y/N) would just leave us, more importantly, Sans, but even so... that doesn't change the fact that I lost hope in her return. I gave up on her.

Dad laughed lightly and put his hands on Sans shoulders, "Exactly, silly~ We just need to think things through. Now... where would she go?" Dad placed his hand on his 'chin' as he was thinking.

"I-I CAN'T REMEMBER."

I swallowed hard as if I had a lump in my throat and finally spoke up, "How much do you remember?"