OVA
Description
Eiko Magami, known as A-ko, is a 16-year-old transfer student at Graviton High School, though her age becomes 19 in the alternate continuity *A-ko the Versus*. She possesses an athletic build, standing 5 feet 4 inches tall, with thick red hair extending past her shoulders. Her signature battle outfit is her former school uniform: a white middy blouse featuring a sailor collar, a red scarf, black armbands, a blue pleated skirt, knee-high white socks adorned with uranium "bon bons," and shiny black Mary Jane shoes. She constantly wears black magical forearm bracers that regulate her strength to prevent uncontrolled destruction.

A-ko is characterized by friendliness, cheerfulness, and a desire for normalcy despite her extraordinary abilities and lineage—her parents resemble analogues of Superman and Wonder Woman. She exhibits a fiery temper when provoked, often resulting in significant collateral damage. Prone to oversleeping and struggling with punctuality, she also maintains a large appetite. Her defining relationship is with Shiiko "C-ko" Kotobuki, her best friend since kindergarten. Though frequently frustrated by C-ko's immaturity or culinary experiments, A-ko remains fiercely protective of her across all media.

Her primary abilities include immense superhuman strength, enabling her to dismantle power armor, robots, and tanks bare-handed, even hurling an M1 Abrams tank, and hypersonic speed that allows her to outrun vehicles and leap vast distances, often causing environmental destruction like collapsing walls or shattered pavement. She exhibits high resistance to conventional damage but remains vulnerable to piercing or cutting attacks, withstanding impacts from high-yield explosions and mecha combat. Her battle uniform adapts in *Project A-ko 4: Final* to provide life support in outer space, demonstrating self-sustenance.

Throughout the franchise, A-ko contends with classmate Biko "B-ko" Daitokuji, whose inventions and battlesuit-fueled rivalry disrupt school life in the original film and sequels like *Plot of the Daitokuji Financial Group* and *Cinderella Rhapsody*. Conflicts often involve romantic competition over Kei or protectiveness of C-ko, revealed as an Alien Princess of the Lepton Kingdom. In *Project A-ko 4: Final*, A-ko and B-ko temporarily ally to sabotage Kei's arranged marriage to their teacher Miss Ayumi, orchestrated by B-ko's father. The story culminates with A-ko pursuing C-ko into space after C-ko decides to leave Earth with her alien mother, though C-ko ultimately returns and reconciles with A-ko.

The *A-ko the Versus* OVAs present an alternate continuity where A-ko and B-ko work as partners in a galactic bounty-hunting team. Here, their relationship lacks the main timeline's antagonism, with B-ko called A-ko's "best and only friend." This A-ko wields a sword capable of harming intangible beings and shows minimal attachment to C-ko, whom she views as an annoyance. Her adult life in the primary timeline remains ambiguous, with one scene hinting at a potential career as a corporate secretary after graduating Graviton High.