Ink's Mistake

Ink's mistake. Ink had many mistakes, so, as you may ask, 'What mistake are we focusing on?'. Well, a recent one. A recent one that led to many, many more.
Ink's plan to finally kill Error by getting all Sanses at once to attack Error went horribly wrong when Error opened a portal and fell through. But, that is where it gets different. Ink falls in the portal with Error.
At this point, as Error stands at the edge of Outertale, looking into the void with Ink latched onto him, attacking him, Error makes a decision. If Ink won't let him be, Ink can come with him. In retrospect, it might be good for the multiverse that they are both gone.
So, with Error's own plan in mind, he throws himself and Ink into the void. Ink and Error both being immortal, they survive the fall into the void and wind up in an entirely different multiverse. Great job, Ink.
_--Much of the idea comes from @harrish6 's HWHBB book. Please read their book before reading this one, or you may be entirely confused!--_