Blood is Insignificant

Kimetsu no yaiba or Demon slayer/ Forced God of Destruction Error Crossover

Error and Dream were in the middle of a battle in Outertale but the islands started to collapse and everyone managed to evacuate except for them. They wake up in the snow to realize that they are in another world completely different than their own.

Their journey began two months before Tanjirou's family is murdered by Muzan Kibutsuji and they try their best to survive in this unknown world while conceal their identities to live as normal human beings.

They will do their best to complete this world's story, even if it meant dealing with the unknown and dangers.