OVA
Description
Shaia Hishizaki belongs to the extraterrestrial Space Federal Directional Control Authority, operating within its 78th Police Investigation Unit's 3rd Attack Force. Her species utilizes numerical identifiers instead of names and lacks psychological gender distinctions. Dispatched to investigate S-Level disturbances on Earth, she infiltrated Bernar High School undercover. Upon arrival, she adopted the pseudonym "Shaia Hishizaki" after receiving Hishizaki melon bread from new acquaintances.

At Bernar High School, she embraced the identity of "Miss Bernard," rising to idol status among male students. She released song CDs and participated in photo shoots, immersing herself in the glamour of her civilian persona. Despite her galactic police duties, she prioritized her enjoyment of idol life and frequently neglected investigations. She maintained a cheerful disposition but exhibited fickleness in personal interests.

During her mission, she partnered with the drone Ball Boy and adopted the superhero alias "Shaia Mask" to deliver justice. Her combat integrated Ball Boy's capabilities, deploying techniques like explosive "Tick-Tack Bombs," energy-based "3-Way Beamers," and coordinated assaults such as "Madness Ballboy" and "Shaia Inferno." After completing her primary mission, she encountered rival Rosary, initiating an ongoing competition for recognition.

Beyond her original series, she appears in the *Angel Blade* franchise as gravure model and pop singer Shaiya Hishizaki. This continuity reveals her as Angel Ender, prototype for protagonist Angel Blade. Her narrative involves investigating scientist Kyoka's disappearance, collaborating with Moena Shinguuji (Angel Blade), and confronting antagonist organization Dark Mother. During a photoshoot, photographer Yayoi assaulted her, exposing her secret and subjecting her to sexual violence. Later captured alongside Ayame, she endured torture in vibrating outfits and public rape before escaping and aiding in her captors' defeat.

No concrete information exists regarding her physical specifications, family relationships, or post-*Angel Blade Punish!* activities.