As Nahida was going near the Iriminsul, she got blasted by a strong energy by the forbidden knowledge, and she was transported near a endless abyss that seemed like a portal, and transferred near a new world- a world where she was not familiar.
The world contains of abilities and organizations instead of nations and visions. Fukuzawa took notice of the girl when she seemed lost and and invited her to stay at the agency for a while, and while, Nahida refused to say any information about herself, because of her not being familiar with this new world, Fukuzawa know she was hidings something, but, respected her privacy.
Noticing her quick thinking, Fukuzawa offered her a job, noticing she had no parents anywhere, and for her own sake and her nations sake, Nahida agreed.
She heard rumours about the book, and she secretly needed to get this book to return to her own world, so she investigated along side herself, never telling anyone her true intentions, as she was aware everyone is going after it, and it would raise suspicion or prior notice and danger about her after Fukuzawa hired her
The ADA members are not aware of her this time, since Fukuzawa hasn’t declared her officially, nor know her.