Frisk POV
We take Finch through the underground, lying on the floor and feeling like garbage at Napsta's old place, and soon enough we're at the remnants of the barrier. I fought Dad here, I still feel so bad. He begged me to kill him and send him back to his family. Guilt always seems to find me when I think about the first human that fell down here, I've sort of replaced them. Some say their ghost still lingers, it must feel awful, watching me take its place. Sans assures me that the first human doesn't deserve to be pitied. Something about resets. He was always depressed at the thought that everything could be reset, all our progress: gone. He remembers that one time I started a genocide run, my first ever run for that matter, I got as far as killing Papyrus before resetting and crying myself to sleep every night in Toriel's house in the pacifist route that ended in freedom and now we're here. He forgives me. I gave up the ability to reset, I didn't destroy it, but I hid it somewhere that not even Flowey could find and get his hands on. The power to reset lies in a mysterious looking room with a grey door. I was anxious to go past it on Finch's tour through the underground, but it's nowhere to be seen.
"Why would you give up life down here to live on the surface?" Finch asks.
"Well we wouldn't have met you if we didn't," Sans grins.
"But you didn't know that!" She goes on. "Up on the surface, there are so many bad people! Don't even get me started on the history, racism and slavery and the holocaust!"
I didn't really learn about any of that, but they sound awful.
"Humans used to enslave other humans?" Sans looks horrified.
"Humans are freaking awful!" She growls. "No offence Frisk, I mean, you're nice."
I give her a thumbs up and we progress back outside.
"What now?" Undyne asks.
"We go home," Alphys shrugs. "And see how things work out."