Aftertale: The lost souls

I just noticed Geno's a pretty lonely character, I mean, like, he's the only character in the AfterTale AU, No AT Papyrus, no AT Toriel, no one. And I think the Sans & Papyrus in that AU are excluded. 
So I thought, what if the Lost Souls of the Genocide Route are his companions? That seems to be a good idea for a story, too bad I cant think of one. And plus, I've already have a comic that Im busy to.
I've thought of this idea once before but with Sans instead of Geno. It's like an AU where all the Genocide victims came back for revenge, and they look exactly like the ones in this drawing.

Undertale (c) Toby Fox
Aftertale & GenoSans (c) TheCrayonQueen