Aka stands as a high-ranking enforcer within the Wind Gang, a militant faction bent on imposing its industrialized vision through relentless violence. Second only to leader Kurogane, he executes duties with ruthless precision, upholding sworn loyalty to the group’s objectives above all personal bonds. His cutthroat approach starkly opposes Arashi, Kurogane’s son, who initially confronts the protagonists through codes of honorable combat.

Bound by relentless obedience, Aka enforces Kurogane’s will without hesitation—even targeting fellow members deemed disloyal. This includes a directive to eliminate Arashi after the heir’s defiance, later exposed as a strategic ploy to instill discipline rather than a true execution. Aka’s merciless tactics embody the Wind Gang’s creed: crushing dissent and dominating rivals through mechanized supremacy.

As the faction’s iron fist, he ensures control by confronting adversaries head-on, spearheading clashes with the protagonists to assert dominance. While his past, personal ambitions, and potential evolution beyond loyal lieutenant remain unexamined in official narratives, his unwavering enforcement of the Wind Gang’s brutal ideology solidifies his role as Kurogane’s most lethal instrument of authority.