Asuna Kagurazaka attends Mahora Academy as a student in class 2/3-A, seat number 8, residing in room 643. She possesses long orange hair typically worn in twin tails adorned with bell accessories, heterochromia (a blue left eye and green right eye in most depictions), stands 163 cm tall, and has measurements of 83-57-84. Born on April 21, 1988, she is a Taurus with blood type B. Orphaned young, she attends Mahora on a tuition waiver but works delivering newspapers for income. She belongs to the Art Club and struggles academically, particularly in English, earning her the nickname "Baka Red" within the remedial Baka Rangers group; her academic difficulties are later linked to memory alteration. Her personality blends a fiery temper, impulsiveness, and physical aggression—especially towards perverts or children—with fierce loyalty and protectiveness. She harbors feelings for her former homeroom teacher, Takahata, and exhibits a preference for older men. Her relationship with Negi Springfield starts antagonistically but transforms into a protective partnership. Discovering his magic, she becomes his first Pactio contractee, receiving the artifact Ensis Exorcizans, a large sword, and the unique Magic Cancel ability to nullify magic. She assumes an older-sister role towards Negi, displaying intense protectiveness despite consistent denials of romantic feelings others speculate about. Suppressed memories reveal she traveled with the legendary Ala Rubra as a child after being saved by the "Thousand Master," Nagi Springfield (Negi's father). These resurfacing memories uncover her true identity as Asuna Vesperina Theotanasia Entheofushia, the Twilight Imperial Princess of the fallen Ostian Empire in the Magic World (Mundus Magicus). This heritage grants latent abilities like energy projection and combat prowess, awakening during battles such as her confrontation with Setsuna Sakurazaki. During the Magic World arc, she joins Negi's group, Ala Alba, to find Nagi. Upon arrival, antagonist Fate Averruncus captures her due to her significance to his faction's goal of erasing artificially created life-forms in the deteriorating Magic World; her Magic Cancel ability is key to their plans. In *UQ Holder!*, her full legacy emerges. To delay the Magic World's collapse, she agrees to become its cornerstone, entering 100-year stasis. This sacrifice buys humanity time for space colonization. In the "Prime World" timeline, she awakens and time-travels back, aiding in defeating the Mage of the Beginning and enabling Negi to save his father. She later marries and becomes grandmother to Touta Konoe. An alternate timeline sees her prolonged absence leading to the Mage of the Beginning's undefeated reign and Negi's self-sacrifice to seal it; she awakens 130 years later, fuses with her "Twilight Princess" persona, and resides on Planet Shinobu. Her combat emphasizes physical prowess, notably powerful kicks, and swordsmanship with Ensis Exorcizans. Her Magic Cancel evolves to disrupt illusions and generate anti-magic bursts, demonstrated in Magic World battles and against the Mage of the Beginning.