Lucia Konohana, born Haruka Asahi, endured childhood genetic experiments conducted by a Guardian faction under Brenda McFarden. These procedures aimed to create humans capable of surviving a future environmental collapse through cryogenic stasis. Lucia emerged as the sole survivor, gaining the ability to emit a lethal poison that withers living organisms on contact and to generate controllable vibrations. The modifications cost her, among other senses, her sense of taste. After the project's cancellation, placement in Santa Brosia orphanage followed. Defective suppressants allowed her poison to affect plants and animals, spawning bullying and rumors of a curse. A traumatic fever-induced loss of control resulted in a caretaker's death and the orphanage's evacuation, solidifying Lucia's belief in her cursed nature. She adopted the name Lucia Konohana and used her abilities to intimidate those spreading rumors. As class representative, Lucia enforces rules strictly, responding with violence to repeated or serious offenses. She maintains a detached demeanor, habitually wearing gloves to avoid physical contact due to trauma, leading others to perceive her as a clean-freak. Despite her bluntness, she reveals a softer side around Kotarou Tennouji and Shizuru Nakatsu. Her appearance features blue eyes, black hair tied with a white lace ribbon, and a preference for dark-colored clothing like dark blue or black. She typically wears her school uniform with black thigh-high socks and gloves. Lucia's vibrational abilities disrupt machinery and electronics, requiring her to wield a katana in combat; the vibrations enhance its cutting effectiveness akin to a chainsaw. Her poison necessitates ongoing medication for suppression. These traits classify her as a Guardian soldier possessing superhuman physical characteristics, enhanced senses, and regenerative capabilities. Her storyline involves Kotarou investigating rumors about "Haruka Asahi." Lucia misdirects him by feigning possession and intimidating potential informants. After Kotarou deduces her identity, he rewrites his body to resist her poison, enabling physical contact. This act deepens their relationship, culminating in a shared dream date where they express mutual feelings. Later, her suppressants fail, endangering Shizuru and requiring renewed medical intervention by Guardian. In the crossover series, Lucia retains her class representative role and participates in activities like forming the Neo Kendo Club. Her vibrational abilities cause comedic mishaps, such as exploding clothing during a soccer match. References appear to her reconciliation with Chihaya Ōtori through a spicy parfait-eating competition. Her interactions with characters from other series occur within a shared school setting, though she lacks a central narrative role.