Undertale-multiverse Stories

A story following the Royal Scientist Emily Gaster, the daughter of Wing Ding Gaster doing experiments and her life in the underground before the destruction of her AU b...

I don't know what I'm doing, so have some ideas. Undertale multiverse(s)! I prefer FGoD Error and Papyrus-roles, but there's probably going to be a fair amount of variet...

Au's aren't meant to collide. the seasons, in an ideal timeline, would never have met at least not this way. in the ideal world, Summer would still think that there was...