Kirie Sakurame serves as a core member and primary financial sponsor for the immortal organization UQ Holder, holding the rank of Number 9. She appears as a young, short-statured girl with light-colored hair styled in a braid on the left side of her face and another at the back of her head. Her typical attire resembles a school uniform, featuring a patterned cap, a dark cape-like top, a skirt, dark boots, and glasses. After consuming the Elixir of Eternal Youth, her physical aging halted around age thirteen, though her mental age reflects significantly more lived experience. Later, when she loses her immortality, her body ages naturally into a teenager and eventually an elderly woman. Initially presenting as extremely shy and reclusive, Kirie often avoids social interaction and hides behind allies like Ikkuu Ameya. Her true nature, however, is domineering, rude, and strategically calculating, frequently displaying arrogance and condescension, particularly toward Touta Konoe, whom she initially dismisses as incompetent. Despite this, she gradually develops deep romantic feelings for him, becoming fiercely protective and emotionally dependent. A profound fear of abandonment, stemming from severe childhood neglect, underpins her dread of isolation; she first activated her time-reset ability after starving to death at age four due to parental abandonment. Kirie possesses two distinct forms of immortality: - **Reset & Restart**: This primary ability allows her to create "save points" in time. Upon death, she reverts to the last save point, retaining all memories of previous loops, forcing her to meticulously memorize events to avoid timeline inconsistencies. Variations include *Time Freeze* (pausing time, activated/deactivated by kissing Touta) and *Short Retry Action* (a limited rewind to avoid immediate fatal outcomes). - **Elixir of Eternal Youth**: This halts biological aging independently of her time-reset power. After training under Dana, she masters various combat and utility magics, including *Accelerate* (speed enhancement), *Familiar* (scouting), *Telescopy* (long-range vision), *Magical Burst* (propulsion), and *Sakurame Frankensteiner* (a physical takedown maneuver). She forms a Pactio contract with Touta, granting her the card *Viator Temporis*. Her standard equipment includes a mana phone for holographic interfaces and spell augmentation. Her relationship with Touta evolves from hostility to deep romantic attachment. Key developments include: - Their first accidental kiss triggering Time Freeze, revealing this new aspect of her abilities. During the frozen time, she confides in him about her fear of solitude, and he vows never to abandon her. - She repeatedly confesses her love, though Touta struggles to reciprocate fully due to his feelings for Yukihime. During battles, she prioritizes his safety, such as shielding him from Negi Springfield/Ialda Baoth. - After losing both immortalities to return from a parallel dimension, she ages physically. Touta accepts her as his lover, and they consummate their relationship. Decades later, as an elderly woman, she remains devoted to him. - She later agrees to a polyamorous arrangement with Touta, Kuroumaru Tokisaka, and Karin Yuuki. Her story arcs highlight her strategic value and emotional growth: - In early missions (e.g., Fighting Fate Arc), she uses time-resets to gather intelligence, notably during Touta’s initial tower ascent. - During the Mahora Investigation Arc, her powers help counteract a zombie outbreak. - In the Dark Future Arc, she protects Touta during temporal disruptions. - Her abilities prove crucial against the Mage of the Beginning (Ialda Baoth), particularly during the final battle where she sacrifices her immortalities to power a dimensional-return spell, stranding her in a parallel world until UQ Holder rescues her. - Post-rescue, she ages naturally but continues supporting UQ Holder’s efforts, eventually retiring peacefully with Touta.