UnderBlight Au

(Obsessed. He’s convinced himself that the dolls have Papyrus’ and Toriel’s souls inside them. Sans even uses them to roleplay and will use whatever objects he can find around the lab to make environments for them.)

*I only have enough determination for me and one other… If I give away too much, I can catch the virus

, then i won’t be able to help

anyone

.

*actually it’s pretty weird. after the outbreak i noticed plasma and blood forming along the inside of my ribs and spine. it eventually grew into organs. They contract and pulse as if they were functioning, but so far they’ve done nothing.. they don’t really seem to be in the right order either, like they’re all mixed up.

*heheh they hurt like a bitch though! gotta be careful to avoid touching them...

(oh man undyne is not a happy camper..)

*i’m fine. really i am. don’t worry ‘bout it, kid.

This is UnderBlight (or UB!), an AU of Undertale! In this au a plague has infected the underground and determination is the cure. Unfortunately for monsters, they cannot sustain the amount of determination that humans can, so they are incredibly vulnerable. The disease has a different effect on each monster, some becoming mutated freaks while others become weak and inevitably die in a unique, horrific way.

Frisk and Sans, being the main protagonists, aid each other on their quest to find a new cure and escape the underground with their friends healed. While Frisk can help keep Sans as healthy as possible using medicines, Sans helps protect Frisk from hostile mutants.

More to be added to the AU as the story progresses!