The Archivist of Gotham (The Magnus Archive × Batman Fanfic)

When he woke up, he was missing most of his memories and identity. He knows that he wasn't supposed to be in a 12-year-old stranger's body and his name isn't Jonas Cane. Most of all, he wasn't supposed to be living in a place called Gotham and experiencing hallucinations about a thing called Archivist System.