TV-Series
Description
Commander-in-Chief Yutaka Hisaishi commands the Arcadia Defense Force while serving as Headmaster of Arcadia Academy. He directs the Gyrozetter program and recruits drivers prophesied by the Rosettagraph, possessing light brown hair and brown eyes.

Within Arcadia's secret defense facility, he personally reveals the transforming A.I. vehicle Raibird to Kakeru Todoroki, identifying it as a Gyrozetter. During Xenon's initial assault on the academy, Hisaishi overrides subordinate objections to authorize Kakeru's deployment, citing faith in the Rosettagraph prophecy and Kakeru's potential to choose his own future. He witnesses Kakeru's mother acknowledge the events as predestined after the successful engagement.

Hisaishi maintains awareness of temporal anomalies, deducing future alterations when observing discrepancies in recorded footage where Kakeru appears fainter than others. He recognizes this as evidence of targeted retaliation from a future adversary. He is the father of Souta Gunji, who operates as Eraser-01.