Character Relationship Map: The Brain Man

Characters

• Ichiro Suzuki (played by Toma Ikuta) — protagonist

  The central subject of the story, Ichiro Suzuki is held for psychiatric evaluation after a suspected killing. He has shrapnel lodged in his back but barely feels pain, responds to questions with unset...

• Cop (played by Yosuke Eguchi) — supporting

  A law-enforcement officer involved in Ichiro Suzuki's evaluation and the investigation. The Cop argues that abnormal behavior should not automatically excuse a person from responsibility for killing a...

• Noriko (played by Fumi Nikaido) — supporting

  A brilliant young woman with no criminal convictions whose history is surrounded by unexplained deaths, including the murders of her parents. Authorities examine her as part of the wider investigation...

• Hirono (played by Kensuke Owada) — supporting

  A Cop working on the investigation who is wounded after Ichiro Suzuki uses his gun to kill someone. The incident leaves him shaken and angry at his own lapse in judgment.

• Yuria (played by Rina Ohta) — supporting

  A dead girl whose online footage shows her strangling herself. Her death becomes part of the investigators' disturbing examination of the case.

• Shimura (played by Shota Sometani) — minor
• Shimura's mother (played by Hako Yamasaki) — minor

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Shimura's mother → Shimura (mother)
• Cop → Yuria (Professional Case Investigator) — Yuria's death falls within Cop's investigative sphere.

  Cop participates in the authorities' investigation, which examines the dead girl Yuria and the footage she posted online.

• Hirono → Yuria (Professional Case Investigator) — Hirono is part of the investigative context surrounding Yuria's death.

  Hirono works with the investigation, and investigators examine Yuria's death and her online footage.

• Noriko → Cop (Professional Investigation Subject) — Noriko becomes a subject of the authorities' inquiry.

  Investigators examine Noriko because she has no convictions but is surrounded by unexplained deaths, including the murders of her parents.

• Ichiro Suzuki → Hirono (Professional Investigation Subject) — Hirono is directly affected while investigating Ichiro Suzuki.

  Hirono works with the investigation into Ichiro Suzuki, and he is wounded after Ichiro Suzuki uses Hirono's gun to kill someone.

• Ichiro Suzuki → Cop (Professional Subject And Investigator) — Cop investigates Ichiro Suzuki's responsibility and mental condition.

  Ichiro Suzuki is held for psychiatric evaluation before prosecution, while Cop insists that his abnormal behavior should not automatically excuse him.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Ichiro Suzuki → Yuria (Narrative Case Association) — Yuria's death is investigated within the same expanding chain of violence.

  After Ichiro Suzuki uses a gun to kill someone, investigators examine the dead girl Yuria and her online self-strangulation footage as part of the dis...

• Ichiro Suzuki → Noriko (Narrative Case Link) — Both are connected to the unresolved investigative mystery, although the precise link remains undisclosed.

  Authorities investigate links between Ichiro Suzuki and a series of bombings, then examine Noriko as a brilliant woman surrounded by unexplained death...

• Cop → Hirono (Alliance Investigation Colleagues) — They belong to the investigative effort surrounding the case.

  Hirono is described as a Cop working with the investigation, while Cop is involved in the same authorities' inquiry into Ichiro Suzuki.

Story Analysis

The film examines whether extraordinary intellect and abnormal behavior can explain violence, while leaving the central investigation deliberately unresolved.

Plot Progression

1. The Promise of Recognition — A presentation proposes that murderers and victims' relatives can change by confronting one another's humanity. The ideal is undermined when a participant is attacked and spectators treat the violence...
2. The Unreadable Detainee — Ichiro Suzuki is held for psychiatric evaluation with shrapnel in his back and little apparent pain. His literal answers force Cop and the examiners to question whether his abnormality is genuine or p...
3. Birth of Brain Man — The investigation reconstructs Ichiro Suzuki's childhood memory and specialist training. His intellectual mastery, combined with missing basic understanding, suggests that a project to create perfecti...
4. Violence Leaves Evidence — Bombing links emerge, followed by a killing involving Hirono's gun and an injury to Hirono. The investigation then examines Yuria's disturbing online footage and death.
5. The Unconfirmed Return — Noriko's history of unexplained deaths expands the mystery, but no final explanation is supplied. Ichiro Suzuki disappears, and the closing demand to see him again leaves the investigation in darkness...