Yozuru Kagenui is an oddity specialist and professional onmyouji dedicated to combating immortal aberrations. She possesses striking black hair with red streaks cut in a bob, accentuated by a bird-shaped hair clip, and vivid red pupils. Her attire typically consists of a khaki shirt layered over a black collared top featuring matching bird motifs, dark red pants with suspenders, and black high-heeled sandals. A defining behavioral trait compels her to avoid touching the ground directly at all times, maintaining this posture as if evading "a sea filled with sharks." This condition stems from a curse shared with her rival Tadatsuru Teori, resulting from their joint work on the legs of her shikigami, Yotsugi Ononoki. When necessary, she uses Yotsugi as a physical platform. Hailing from Kyoto, she speaks in a native Kansai dialect. Her background includes attending the same university as Deishuu Kaiki and Meme Oshino, where they were members of an occult research club alongside their upperclassman Izuko Gaen and Tadatsuru Teori. Within this group, she positioned herself as an advocate for justice. Her rivalry with Tadatsuru intensified during college when Yotsugi chose her as a master over him; she is the only member of their trio to graduate. Professionally, she operates pro bono, distinguishing herself from peers like Oshino or Kaiki. She self-identifies as "Japan's first battle onmyouji," focusing exclusively on exorcising immortal oddities due to their unique challenge. Her ideology centers on eliminating entities she deems "alive forever," viewing them as unnatural aberrations with no rightful place in the world. This mission-driven ruthlessness often disregards collateral damage against targets. Yet, she acknowledges the humanity of individuals like Koyomi Araragi, even post-encounters with oddities, and exhibits nuance by sparing entities classified as "dead forever," such as her assistant Yotsugi. Her combat abilities include superhuman physical strength, martial arts proficiency, and barrier creation. Normally, her strikes register at Wall level (capable of destroying cars or demolishing buildings), but escalate to Small Building level+ against immortal targets. She possesses clairvoyance through Yotsugi, extrasensory perception to identify supernatural entities, and potential durability-negating techniques via talismans. Her speed is supersonic, honed by training that includes fighting polar bears barehanded. The curse preventing ground contact necessitates constant acrobatic movement across structures or trees. Key narrative involvements include the Tsukihi Phoenix Arc, where she arrived to eliminate Tsukihi Araragi as a phoenix oddity. After confrontations with Koyomi and Shinobu, she conceded upon recognizing Koyomi's resolve to protect his sister, departing the town. In the Tsukimonogatari/Yotsugi Doll Arc, she collaborated with Koyomi to rescue hostages kidnapped by Tadatsuru Teori, directing Yotsugi to defeat Tadatsuru using the "Unlimited Rulebook." During Shinobumonogatari, she intervened in a vampire case involving Suicide-Master, reverting the human antagonist Harimaze Kie to human form to restore mummified victims and exiling Suicide-Master from Japan, underscoring her role as an uncompromising enforcer of order. Her personality blends stoicism, logic, and a self-proclaimed commitment to justice. She analyzes situations methodically, prioritizes duty over emotional considerations, and maintains emotional detachment, often perceived as cold or aloof—traits Koyomi Araragi noted parallel Meme Oshino's demeanor.