Chaos Dister, once a promising student at Yashiro Arcology’s academy, discovered the Caduceus Project—a covert initiative mutating animals into grotesque bio-mechanical hybrids called Guilstein. After threatening to expose its horrors, he was betrayed by his closest friend, Lee Igarashi, and forcibly subjected to experimental procedures that converted him into the first human Guilstein. The transformation granted heightened physical prowess but branded him a fugitive hunted by Yashiro’s forces.

Following a harrowing escape, he sought sanctuary with Anagura, a rebel faction battling Yashiro’s oppressive regime. His partnership with Sabi Suad, a survivor haunted by Guilstein-slain kin, anchored his crusade to dismantle the project. Sabi’s vendetta against Yashiro’s architect Mudem intertwined with his own resolve to halt the atrocities.

His past entwined with Reimei Kanan, a Caduceus Project scientist who first revealed its ethical rot. During his escape, he shielded her from collateral destruction, leaving her convinced of his death. Their unresolved rift deepened when she uncovered his survival during Anagura’s raid on Yashiro’s facilities.

His journey centered on battling the scars of transformation—retaining human consciousness yet wrestling with Guilstein stigma and the moral weight of a potential cure. This turmoil shaped his strategies, from clashes with former allies like Lee to direct strikes against Mudem.

The siege on Yashiro’s central tower proved pivotal. There, he confronted Lee, who rationalized betrayal as survival, and Reimei, burdened by guilt. Collaborations with Anagura’s arms specialist Oohashi and prodigy hacker Iyu underscored his evolution from strategist to defiant symbol. The climax arrived in a final duel with Mudem, where he chose eradicating the project over vengeance, cementing his legacy as a revolutionary force against Yashiro’s tyranny.