Kazari Uiharu, a Level 1 esper at Sakugawa Middle School, serves in Judgment, Academy City’s student-run law enforcement. Recognizable by her flower-patterned headband and occasional surgical mask—a precaution against frequent illnesses—she wields exceptional computer expertise, repelling hackers and extracting vital data to aid investigations. Though primarily providing logistical support, she occasionally joins fieldwork alongside Shirai Kuroko, her steadfast partner since a pivotal bank robbery in their elementary years. During this incident, Uiharu was held hostage, and Kuroko’s rescue, aided by Misaka Mikoto, cemented their shared commitment to grow within Judgment. Polite and reserved, Uiharu employs formal speech and maintains a composed demeanor, deliberately restraining her emotions. Yet her quiet shyness belies a fierce moral compass. She risks her safety to protect others, even as a non-combatant, exemplified when shielding allies during crises. Her empathy shines in moments like consoling Level 0 friend Saten Ruiko during the Level Upper incident, affirming that strength transcends esper rankings. This loyalty extends to Haruue Eri, her roommate during the Poltergeist arc, whom she supports despite Haruue’s suspected ties to paranormal disruptions. Uiharu’s resilience peaks during the Battle Royale Arc, where she safeguards Last Order, a clone linked to the Misaka Network. Interrogated and tortured by Level 5 esper Kakine Teitoku, she endures brutal harm but defiantly conceals the child’s location, embodying her unwavering dedication to justice. Flashbacks reveal her resolve to overcome self-perceived flaws, like her “slowness,” by embracing Judgment’s principles and collaborative strength. Compassionate and approachable, she comforts distressed individuals and shares lighthearted exchanges with friends. Chronic illness and a recurring gag of thwarted dessert indulgence punctuate her early narrative, though these elements recede as her role evolves. Over time, she grows increasingly assertive, navigating moral dilemmas and threats to allies with strategic poise, gradually expanding her capabilities beyond support duties into decisive crisis management.