Uki Yamazoe, a teenage girl with a childlike demeanor, sports light brown hair tied in a side ponytail, round glasses, and a red ribbon tie. Her green frog-shaped backpack, a constant companion since childhood, contrasts her timid posture and selfless nature—a trait honed through years of tending to patients in a concealed hospital facility beneath AH General. After leaving elementary school following the Shibuya earthquake, she abandoned formal education to focus on caregiving duties.

Uki harbors an uncontrollable power: manifesting delusions that unwittingly grant others’ deepest wishes. These episodes arise unpredictably, such as conjuring a temporary, idyllic reality to fulfill a companion’s desire for a better life. During a critical confrontation, her attempt to halt a brainwashed assailant leads to a fatal injury. Consumed by remorse, she crafts an elaborate delusion for the perpetrator, erasing past traumas and preserving fractured relationships. This fabricated world fractures as shards of truth seep in, pitting her idealized self—desperate to sustain the fantasy—against her dying physical form, which pleads for acceptance of reality. The clash ends with her body surviving but her mind retreating into catatonia, dependent on prolonged medical care.

Linked to physician Genichi Norose, her post-incident overseer, Uki’s surname merges “mountain” (山) with “annexed” (添), while her given name (うき) lacks inherent meaning. Her narrative weaves themes of escapism’s allure and idealism’s dangers, probing the ethics of reshaping perceptions to shield others from pain. Post-events, she remains under guardianship, her future recovery faintly hinted yet unguaranteed across certain endings.