The Illusions of Nagato Yagami: To Mask Thy Instinct

Synopsis
To Mask Thy Instinct is a one-shot in a series of fanfiction in Bleach: The Illusions of Nagato Yagami. This story describes the mission that made Yagami famous within the 3rd Division, and eventual transfer to the 5th Division as a Fourth Seated Officer by Aizen himself. This one-shot also goes into detail about Yagami's first encounter with an Arrancar.