Kamijou Touma, a high school student in Academy City, holds the official designation of Level 0 esper despite possessing Imagine Breaker—an undetectable ability housed in his right hand. This power nullifies all supernatural forces, from magic to divine energy, while paradoxically eroding his luck, condemning him to perpetual misfortune. His spiky gel-styled black hair and standard school uniform lend him a delinquent aesthetic, belying his earnest personality. Ostracized in childhood due to superstitions tying his misfortune to others, Touma’s parents, Touya and Shiina, enrolled him in Academy City. There, he uncovered Imagine Breaker’s power to negate esper abilities, attracting scrutiny from figures like Aleister Crowley, who manipulated his enrollment for hidden agendas. A fateful encounter with Index, a nun burdened with 103,000 grimoires, reshaped his life. To shield her from a memory-erasure spell, he sacrificed his own recollections, resulting in anterograde amnesia. This sacrifice thrust him into the crossfire between scientific and magical factions. Post-amnesia, Touma constructed a persona aligned with others’ expectations, driven by an unwavering commitment to protect anyone in peril, even at great personal cost. Frequent hospitalizations punctuate his efforts, yet he counts survival without severe injury as victory. Imagine Breaker’s mystery deepens as a “reality reference point,” capable of reversing world distortions. Severing his right arm unleashes draconic entities—each wielding distinct powers like memory manipulation or life-draining flames—hinting at latent forces beyond his grasp. These manifestations, from the First Dragon’s psychological assaults to the Corpse Flame Dragon’s destructive fire, underscore the enigma of his existence. Relationships orbit his selfless nature and obliviousness to romance. Figures like Index, Mikoto Misaka, and Shokuhou Misaki gravitate toward him, though his singular focus on protection breeds misunderstandings. Misaki’s use of Mental Out to save him fractured his ability to remember her, cementing a one-sided connection. Touma’s ethics prioritize action over ideology. He challenges foes irrespective of power, rejecting trauma-based justifications and demanding personal accountability. This stance forges alliances with former adversaries like Accelerator, whom he defeated during the Level 6 Shift Project. His defiance of authorities such as Aleister Crowley or Fiamma of the Right cements his role as a disruptor in global conflicts. Spin-offs expand his history: *Biohacker* reveals middle-school encounters with Mitsuari Ayu and Kumokawa Seria, showcasing early protective instincts. The *Railgun* series highlights his intervention in Mikoto’s despair during the Sisters Project, strengthening their bond. Memory gaps haunt his identity. Though muscle memory and reflexes remain intact, lost recollections force him to feign familiarity to spare others distress. This duality—forgetfulness paired with unyielding resolve—anchors his journey through a world where his choices ripple across factions. The dragons and Imagine Breaker’s cryptic ties to concepts like collective human hope position Touma as a pivotal figure in Academy City’s schemes. Yet his focus stays rooted in saving individuals, not orchestrating grand designs—a linchpin clinging to humanity amid converging shadows.