Reika Sanjō, a former Interpol agent, leverages her investigative expertise and tactical brilliance as a key strategist and combat specialist within the protagonist’s team battling the Meganoid threat. Her law enforcement background sharpens her proficiency in high-stakes espionage and direct confrontations, positioning her as both a field operative and mission planner.

Stationed at the protagonist’s headquarters alongside a butler, a childhood friend, and an orphan, she pilots an attack helicopter armed with missile systems to deliver critical aerial support. During one operation, antagonist Koros captures and converts her into a Meganoid duplicate alongside an ally, though discrepancies in their uniforms expose the ruse, enabling their retrieval.

Reika’s ingenuity surfaces in a confrontation where she channels a psychic ability to project heart-shaped energy beams, defusing hostility without lethal force. While subtle undercurrents of attraction linger between her and the protagonist, her focus remains steadfast on mission objectives.

Her arc concludes with the Meganoids’ defeat, after which she departs the team alongside fellow core members, severing the protagonist’s final ties to their former coalition. Post-conflict endeavors and expanded media appearances remain undocumented in existing records.