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After the two Peters leave to their respective universes, Stephen is unable to cast the memory spell
Which means Peter has to leave somewhere where he doesn't exist

He ends up in Gotham, in a state that he's never been before
What's more wierd is his spider sense started speaking to him but who would count that

°°°°°°°

it was first posted on ao3 but I decided to cross post it here too because why the hell not