Story Structure — 5 Plot Phases
The Missing Brain
Manabu Hayase joins Detective Tobitaka and Doctor Akagi at a gruesome murder scene. The suspicious butcher and the discovery of similar crimes broaden the case beyond an ordinary homicide.
Key Events
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Brainless Murder Scene — Investigators find a murdered man whose brain has been removed beside freshly cooked stew. Characters: Manabu Hayase, Detective Tobitaka, Doctor Akagi
Location: The first crime scene
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Initial Forensic Examination — Manabu, Tobitaka, and Akagi examine the unusual injuries and missing brain. Characters: Manabu Hayase, Detective Tobitaka, Doctor Akagi
Location: The first crime scene
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The Butcher Leads Nowhere — The investigators question a suspicious neighboring butcher who cooks stew and appears unusually strong. Characters: Manabu Hayase, Detective Tobitaka
Location: A neighboring butcher shop
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A Pattern Of Murders — Evidence links the crime to a series of similarly bizarre murders rather than an ordinary killing. Characters: Manabu Hayase, Detective Tobitaka, Doctor Akagi
Location: Police investigation offices
The False Solution
Evidence and witness testimony identify Chizuru Kashiwagi as the apparent killer. Her arrest and death seem to close the case, but the investigators cannot reconcile her body with the crimes' apparent strength and intelligence.
Key Events
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Victims With Damaged Brains — The victims include a volunteer teacher and others whose brains were removed or damaged. Characters: Manabu Hayase, Detective Tobitaka, Doctor Akagi
Location: Investigation records and crime scenes
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Chizuru Becomes Suspect — Witness testimony and physical evidence point toward the missing student Chizuru Kashiwagi. Characters: Manabu Hayase, Detective Tobitaka, Chizuru Kashiwagi
Location: Police investigation offices
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Chizuru Is Arrested — The police arrest Chizuru after testimony claims she attacked a man and opened his head. Characters: Detective Tobitaka, Chizuru Kashiwagi, Manabu Hayase
Location: Police custody
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Chizuru Dies — Chizuru dies, apparently ending the immediate case against her. Characters: Chizuru Kashiwagi, Manabu Hayase, Detective Tobitaka
Location: Police custody
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The Body Cannot Explain It — The investigators question how Chizuru's body could have possessed the strength and intelligence behind the crimes. Characters: Manabu Hayase, Detective Tobitaka, Doctor Akagi
Location: Investigation offices
The Hidden Presence
The investigators consider that an unknown force may use human brains. Atsushi Kimura contacts Manabu, claims Chizuru's brain moved into him, and escapes after an armed confrontation.
Key Events
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A Foreign Presence — The investigators consider that an unknown presence may enter human brains and control or use people. Characters: Manabu Hayase, Detective Tobitaka, Doctor Akagi
Location: Investigation offices
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Kimura Monitors Police — Crime enthusiast Atsushi Kimura monitors police communications and reaches out to Manabu. Characters: Atsushi Kimura, Manabu Hayase
Location: Police communications network
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The Disturbing Gift — Kimura leaves Manabu a disturbing gift carrying the words "For Beloved Manabu." Characters: Atsushi Kimura, Manabu Hayase
Location: Manabu's surroundings
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Kimura Claims Chizuru's Brain — Kimura claims that Chizuru's brain moved into him and that the killings are continuing. Characters: Atsushi Kimura, Manabu Hayase, Chizuru Kashiwagi
Location: Kimura's contact point
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Kimura's Armed Escape — Kimura behaves erratically, survives an armed confrontation, and escapes while injured. Characters: Atsushi Kimura, Manabu Hayase, Detective Tobitaka
Location: A police confrontation site
Morphine And Fear
A morphine requirement suggests that the force may be using access to hospitals or medical workers. Further deaths deepen Manabu's fear that the threat is moving closer to him.
Key Events
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The Morphine Clue — The investigators theorize that the unknown force requires morphine and may access hospitals or medical workers. Characters: Manabu Hayase, Detective Tobitaka, Doctor Akagi
Location: Investigation offices
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Medical Witnesses Die — People connected with the case, including Doctor Akagi and a female doctor, die as the threat expands. Characters: Manabu Hayase, Doctor Akagi
Location: Medical facilities
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Manabu Feels Targeted — Manabu believes the force is targeting him and may be hiding inside a woman he could love. Characters: Manabu Hayase, Asako
Location: Manabu's surroundings
The Woman In Danger
Asako acts strangely while the police consider killing her. After she tells Manabu that something is inside her head, he goes to find her, leading into an unresolved final confrontation.
Key Events
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Asako Acts Strangely — Asako begins behaving strangely, causing the police to consider killing her. Characters: Asako, Manabu Hayase, Detective Tobitaka
Location: Asako's surroundings
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Asako's Desperate Call — Asako tells Manabu that something is inside her head and that she is in pain. Characters: Asako, Manabu Hayase
Location: Telephone contact
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Manabu Faces Asako — Manabu goes to find Asako, leading to a final confrontation whose outcome is not shown. Characters: Manabu Hayase, Asako, Detective Tobitaka
Location: Asako's location