Undertum Stories

I just put some undertum storys I thought of in here, it's that simple. I hope you enjoy this book though.

Mainly what the title says. Lots of Sans, ton of SANS, Undertale sans, undefell sans, ALL THE SANS. BUT WITH A CHUBBY READER. WHHHAAAAT I KNOOOOW. READ FOR THE FLUFF...

I've noticed a lack in Undertum and Inflation stories, so here's a collection I will work on every once in awhile! From inflation to weight gain! Edit: I'm probably goin...

After so many meals and so long of being fattened up.... this is the only way it could end

Betty spends the weekend with Toriel and learns that trying to murder Frisk isn't needed for a happy mind and that a sweet alternative is coming (cover belongs to Nommer...

Toriel stuffs frisk

your baker mother Muffet, your chubby you, and big "bad" Betty, all in one story that ends well! (art belongs to really-normal)

Frisk has grown up now and moved away to the big city to attend college. She misses her monster family, especially Sans. He comes to visit her one day and suddenly, some...

I just found out this was a thing and I have done a lot of research for this so now I can write a fanfic!!!!

A small little place for Rping weight gain. (Credit to Chub-Love-Fics on DeviantArt for cover.)

Toriel gets lonely, wishing the humans didn't leave her so she eats herself into obesity.

..... i made a wattpad account for this....Merry Christmas...

it has fontcest but only slight 18+

an nightmare sans undertum story,(horror x nightmare)