Nobu Kageyama

Nobu Kageyama (延影山, "Prolong, Shadow Mountain") is a former top agent of the elusive Kidō Corps, who defected to the world of the living after killing his own Master, Sakura Ywagashi; the current Kidō Corps Commander at the time when she failed to name him as her successor to the post. For this he was branded a traitor and a potential threat to the world of the living. Even to this day, his name is still uttered with disgust among their ranks. Because of his tremendous abilities within the field of magic and crimes against the Seireitei, he's among the most wanted criminals in Soul Society history.

Kageyama's originated from a secluded portion of the western Rukongai districts, where he was handpicked along with nine other children to spearhead the path to the Corps future; as soon as he could speak and manipulate his spiritual energy he was taught how to wield magic. Because of his latent talent, Ywagashi become his guardian and mentor. The woman watched over him through his upbringing, but she never felt particularly close towards him and never treated him as a mother would, something that would become very apparent once Nobu grew to become a young man.

Sakura took to seducing her young student, promising to make his dreams to come true if he would but show her the affection she craved. They were involved for a long time, but only Ywagashi truly benefited from this arrangement, even if she promised to name him as her successor once the time came. When it became apparent that he'd simply been used by her all these years, his rage surfaced and he destroyed her body with a - attempts were made to restrain him, but Kageyama's magic proved too powerful, and he tore open a large chasm in the meeting hall and escaped underground, never to return again.