A-ko Magami, also known as Eiko Magami, is a sixteen-year-old red-haired high school student living in Graviton City. She wears a distinctive sailor-style school uniform that doubles as battle attire. A-ko possesses superhuman strength, remarkable speed, near-invulnerability, acrobatic prowess, and enhanced senses, including acute hearing. Her powers are regulated by distinctive black wristbands and bon bons attached to her socks; removing these limiters unleashes uncontrollable destructive force capable of leveling buildings. Her personality blends cheerfulness, friendliness, and politeness with a volatile temper that ignites extreme aggression when provoked. Despite her extraordinary abilities, she maintains ordinary teenage preoccupations: oversleeping, rushing to school, a large appetite, part-time work, romantic interests, and fashionable clothes. Her most significant bond is with childhood friend C-ko Kotobuki, known since kindergarten. A-ko acts as C-ko’s dedicated protector, displaying unwavering loyalty even when frustrated by C-ko’s behavior. This relationship forms a core motivation across her stories. A-ko also has a long-standing rivalry with classmate B-ko Daitokuji. Her background suggests an extraordinary lineage, with parents visually resembling archetypal superheroes comparable to Superman and Wonder Woman, implying hybrid genetics as the source of her powers. Her combat style emphasizes close-quarters martial arts techniques like the Screw Kick and Driver Kick, and she occasionally uses improvised weaponry. In some stories, she takes a fast-food job to fund new clothes and pursues a handsome motorcyclist named Kei, leading to conflict with C-ko and B-ko.