Haruka, born July 20, possesses light brown hair, vivid green eyes, and a statuesque figure (169 cm tall, 99-55-88 cm). Her childhood was shaped by a turbulent family dynamic: her mother confined her indoors, treating her as a living doll, while her father, a corrupt physician, pursued extramarital affairs. This oppressive upbringing culminated in a near-arson attempt halted by Rin, who introduced her to puppetry. Haruka later weaponized this craft to expose her father’s crimes, securing her enrollment at Hebijo Academy’s Elite Class as a third-year ahead of peers. In combat, she merges puppetry with chemical explosives and mind-control strategies. Her arsenal includes an illusion-cloaked floating robot puppet and a lab coat laden with volatile vials. Eschewing direct confrontation, she destabilizes foes via psychological manipulation and experimental toxins—including a dance-inducing drug tested on allies Yomi and Hikage during a culinary contest. Though outwardly sophisticated and domineering, Haruka delights in toying with vulnerable targets like Hibari, whom she initially aims to mold into a puppet. Despite her sadistic flair, she displays fierce loyalty to allies, bonding with Ikaruga over shared frustrations with reckless superiors. Unexpected maternal instincts emerge in her protective mentorship of Mirai and Hibari, complicating her manipulative intentions. Her storylines often revolve atoning for experimental mishaps, such as accidentally transmuting peers into anthropomorphic animals—a crisis she resolves alongside the affected. She also joins missions to liberate brainwashed students and combat interdimensional threats through collaborative festivals. A desire for autonomy, forged by childhood oppression, fuels her defiance of authority. Suzune, who intervened post-arson, became pivotal to her growth, recruiting her into Hebijo and fostering a bond that grants Haruka rare insight into Suzune’s motives. Notably self-aware, Haruka breaks the fourth wall with playful nods to game mechanics like tilt controls—a meta trait contrasting her traumatic history. This duality subtly parallels her mother’s objectification with in-game customization themes, layering her complexity.