This AU is mostly about ERROR sans. I will be focusing on his past and how I think it went, though this is MY AU I have based some parts off of videos. Even if it is based on ERROR, there will be more AUS like, Blue - underswap Ink - no AU Geno - Aftertale OG sans - undertale And maybe more, it starts out in the void, and SOMETHING happens. This is when Blue is with ERROR. I plan having all the episodes leave off on a cliffhanger, give you choices and YOU pick what happens next. I will call this AU, UnderCrash ( When ERROR crashes we get a flashback from their past ect. ) Does this AU sound good..?