Miyako, designated Yatsu no Onokoshizuchi, operates as a mecha pilot within the Orochi, an antagonistic faction intent on global destruction. As a secondary antagonist, her dark skin and glasses distinguish her visually, while her narrative role centers on opposing the Solar and Lunar Mikos, Himeko and Chikane, in clashes rooted in Japanese mythology. Her participation in Orochi’s campaigns underscores her alignment with the group’s apocalyptic objectives.

A Dark and Troubled Past, retconned to anchor her redemption arc alongside fellow Orochi member Girochi, frames her allegiance to the faction. This shared history of trauma among Orochi members contextualizes their collective vendetta against humanity. Miyako’s antagonism peaks in an attempted sexual assault against Chikane—a narrative choice emphasizing her moral complexity while highlighting disparate portrayals of similar acts by other characters, underscoring thematic double standards.

Her interactions with Orochi allies like Girochi and Tsubasa reinforce her position within the faction’s hierarchy, portraying a unified front of grievances. While her character remains primarily defined by her role in the central conflict, details regarding extended media appearances or deeper personal evolution beyond the primary series remain unexplored in available sources.