Shun Aurora commands the Special Services Division at Judoh's Department of Security's Government Investigative Office. As Daisuke Aurora’s elder brother, he single-handedly raised him after their father’s assassination by an android and their mother’s desertion during his childhood. These events forged a disciplined, calculating persona that clashes with Daisuke’s volatile temperament, fueling their fractious dynamic.

Tasked with balancing crime prevention and political maneuvering in Judoh’s volatile climate, Shun sanctioned Daisuke’s partnership with the outlawed android J, exploiting J’s skills while skirting legal boundaries. His choices prioritize cold efficiency over loyalty, demonstrated when he deployed override codes to weaponize J against allies during a pivotal crisis.

In the narrative’s climax, Shun stages a coup with the Liberation Army, collaborating with shadow operatives like Serge Echigo to seize control. This treachery exposes his ruthless calculus in sacrificing alliances to enforce his vision of stability. Though the coup collapses, he clings to power within Judoh’s government, a testament to the city’s entrenched, compromised hierarchies.

Shun’s past links ambiguously to the Celestials, guardians of Judoh’s technology, while smoldering resentment toward his absent mother and his father’s unresolved legacy hardens his unyielding worldview. His story ends without absolution, his enduring authority mirroring Judoh’s cycle of corroded ideals and institutional decay.