Undertalereaderinsert Stories

| Last Updated/Edited: 3/19/19 | | Last Chapter Posted: 2 years ago | | Reason: Work and health issues | - After decades of being sealed underground, monsters have retur...

[COMPLETED | Undertale x Reader] * There is another one of these collections of the famous game "Undertale" with the reader in it. * It fills you with determin...

Undertale and all Related Characters belong to Toby Fox. You belong to....You! Credit to ShojotaleAU For the Thumbnail [Info] This story is being relaunched! I've found...

Long ago, two races lived in harmony. Humans and Monsters. One day, war broke out between the two races, killing thousands on both sides. the Humans emerged victorious a...

(I have yet to add a description. I apologize on my own behalf; The readers personality is similar to the readers personality in my CreepsxReader fanfic. Enjoy.)

You're (Y/N) (M/N) (L/N). You're a big fan of Undertale and the AUs but everything changes once you discover what is in store for you after the switch edition (I don't o...

(NOTE: I personally don't ship this but whatever. I'll just stick to fluff. Also, you're adopted. And Frisk is male.) Undertale belongs to Toby Fox. Fluff.