TV-Series
Description
Asukai Kiki, born in Fukui Prefecture, had an unstable childhood marked by frequent absences from elementary and middle school. Expelled from boarding school, her parents sent her to an institution instead of taking her home. At 18, a suicide attempt led to hospitalization. Discharged later, she pursued art but attempted suicide three more times, resulting in repeated hospital stays. At 21, serial killer Denshin Katsuyama ("The Challenger") abducted her. Funetaro Momoki rescued her while Akihito Narihisago killed Katsuyama. Hospitalized again, Kiki vanished three months later. On the night she disappeared, 13 nurses entered her room sequentially and simultaneously fell into comas; three later reported identical strange dreams.

Kiki possessed uncontrollable psychic abilities, projecting her inner thoughts—words, memories, dreams, imaginings—onto others regardless of intent. She endured recurring dreams of being murdered by notorious serial killers, starting with one before John Walker sent multiple killers into her dreams. These intruders brought their emotions and future plans, warping the dreams' content and allowing Kiki to glimpse potential futures. This power caused profound distress, making her feel lost in a violent world, dissolving, merging with it, and ceasing to be herself. Her dreams foretold this fusion would distort the world's structure.

After her disappearance, Takuhiko Hayaseura and Nishio Shirakoma kidnapped Kiki for her psychic powers. She became the core of the Mizuhanome System, a technology enabling users to enter the subconscious "id wells" of serial killers. Within this system, her 14-year-old physical form manifested as "Kaeru," a recurring corpse figure found at the start of every id well investigation. Kaeru's method of death varied per id well, offering clues about the killer's motives or methods, and served as a placeholder when killers forgot victims' appearances. Kiki's own id well, accessible via others who interacted with her, manifested as a cockpit chair and became pivotal in later investigations.

Personality-wise, Kiki exhibited persistent suicidality, seeking death by her own hand or others' after giving up on life. Momoki's official report described her as consistently quiet, intelligent, gentle, and friendly toward others. Her psychic burdens and traumatic experiences contributed to a detached demeanor, with her existence becoming intrinsically linked to the Mizuhanome System's function.