Slayers and Skeletons (Crossover Between Sans AUs and Demon Slayers)

What happens when the Universe itself starts to break?

When the fabric of time swallows you whole?

What happens when the AUs are once again fighting?

Between two teams, the AUs are once again against each other different views, different reasons for fighting

only this time....well let's just say they may have help?

Skeletons, demons, slayers can we fix this? how to get home?

Souls scattered everywhere? new beginnings for friends we never knew we had?

who started this all? what new faces will we encounter? And why do things keep glitching!