Honoka Mitsui, a first-year student in Class 1-A at First High School, distinguishes herself as one of the academy’s top scholars alongside her childhood friend Shizuku Kitayama. Descended from the Elements of Light—a lineage of ancient Japanese magicians—she wields light-based magic outside conventional classifications, inheriting both unique abilities and a genetic inclination toward unwavering loyalty to those of the opposite sex. This trait fuels her persistent romantic attachment to Tatsuya Shiba, whose technical mastery she first witnessed during entrance exams. His subsequent assignment to Course 2 clashed with her expectations, sparking frustration that later collided with schoolyard tensions between courses. During a clash between Course 1 and Course 2 students on the first day, Honoka intervened with an illumination spell meant to pacify the crowd. Misread as hostile, the act compelled her to apologize to Tatsuya, forging a tentative bond. Her emotional vulnerability and delicate constitution contrast with Shizuku’s poise, yet their shared drive for excellence sustains a respectful academic rivalry. Ranked third among freshmen, she thrives in magic theory and technical application, deploying skills like the hypnosis-inducing Evil-Eye, optical camouflage for stealth, and gamma-ray filtration barriers to shield allies. These talents prove vital during covert operations, where she provides reconnaissance or radiation defense. Her affection for Tatsuya evolves into a poignant arc, marked by a confession acknowledging his familial constraints. Undeterred by his inability to reciprocate, she persists with heartfelt gestures—Valentine’s chocolates, a engraved pocket watch—even after learning of his engagement to Miyuki Shiba. Though shaken, Honoka resolves to cherish her feelings, bolstered by Shizuku’s steadfast support. A quiet rivalry simmers with Miyuki, yet mutual respect prevails, with Miyuki occasionally creating openings for Honoka to engage Tatsuya. Shizuku’s parents, treating Honoka as their own, shower her with attention that occasionally flusters her. She openly challenges elitist attitudes, clashing with peers like Morisaki Shun, while her warmth leaves an imprint on underclassmen such as Shippou Takuma, who nurtures an unspoken crush. A deeper thread ties her to Pixie, an artificial being whose parasitic entity awakens through Honoka’s fervent emotions for Tatsuya. Crystal hairpins gifted by him synchronize their magic, imprinting Pixie with Honoka’s personality. This bond propels her into pivotal moments—shielding Watatsumi Kokoa during a crisis, combating parasitic entities—charting her transformation from a reticent student to a determined ally in high-risk missions.