Sans has watched as everything repeated over and over again. So has Frisk. Sans gave up a long time ago. Frisk, she still has plenty of determination. They couldn't end the loop on their own. But maybe, they could end it if they worked together? Female Frisk. Possible future Frisk/Sans.

With only four senses, Touch, Taste, Smell, and Hearing, Frisk must make it out of the underground without the most crucial sense for her survival, Sight. Blind!Frisk AU.

Frisk falls down into the Ruins, but when they try to speak to Flowey, he doesn't understand them. Now he's on a journey through the Underground with this kid, and sometimes they get this weird gleam in their eyes and it looks like they're talking to themself. He doesn't have time for this when there's a couple of human souls that need to be stolen.