once a swap!sans called blueberry, his au was almost completely wiped out by error except both sans and papyrus. for unknown reasons error has decided to abduct
Blue rather than
kill him, leaving papyrus to be found by
CORE!Frisk and be taken to the omega timeline. Over time Error becomes more accustomed to
Blue'
s company, eventually showing him a Transdimensional window of his first time leaving the anti-void as well as his first kill, this, in turn, makes
blue extremely uncomfortable, leading him to say "I'm still your friend, error. despite this. ok?". deeming this as manipulation, error snaps at
blue and confronts him on what he calls "fake friendship", and shows him the soul of his human and explains the concept of resets, explaining how he didn't just randomly attack his au, but rather observed his au waiting for the right chance to strike, error then attempts to
get blue to fight him, resulting in
blue believing that error doesn't want him to right them and that he has found errors weakness, that being that he is scared of friendship. this assumption angers error so much that he abandons
blue in the anti-void with the human soul and as a result of being trapped in the anti-void for so long. blueberry became an error.
