Character Relationship Map: ID: INVADED

Characters

• Sakaido / Akihito Narihisago (played by Kenjiro Tsuda) — protagonist

  A renowned detective currently imprisoned, he investigates serial killers by entering their id wells to analyze fragmented psychological projections. His family was murdered by a serial killer, leadin...

• Funetaro Momoki (played by Yoshimasa Hosoya) — protagonist
• Tamotsu Fukuda (played by Ryota Takeuchi) — supporting
• Koharu Hondomachi (played by Mao Ichimichi) — supporting

  A rookie field analyst who assists investigators using the Wakumusubi scanner to detect and collect cognition particles. She becomes a central character in the series after surviving a brush with deat...

• Sarina Togo (played by Sarah Emi Bridcutt) — supporting
• Takuhiko Hayaseura (played by Manabu Muraji) — supporting
• Sennosuke Shiratake (played by Takashi Kondo) — supporting
• Masamune Habutae (played by Shuhei Iwase) — supporting
• Kazuo Wakashika (played by Junya Enoki) — supporting
• Shiro Kokufu (played by Wataru Katoh) — supporting

Canonical Relationships

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

• Sarina Togo → Funetaro Momoki (Professional Superior) — Sarina is Momoki's supervisor
• Sakaido / Akihito Narihisago → Shiro Kokufu (Professional Colleague) — Works alongside in the investigation team
• Sakaido / Akihito Narihisago → Kazuo Wakashika (Professional Colleague) — Works alongside in the investigation team
• Sakaido / Akihito Narihisago → Masamune Habutae (Professional Colleague) — Works alongside in the investigation team
• Sakaido / Akihito Narihisago → Sennosuke Shiratake (Professional Colleague) — Works alongside in the investigation team
• Sakaido / Akihito Narihisago → Takuhiko Hayaseura (Professional Colleague) — Works alongside in the investigation team
• Sakaido / Akihito Narihisago → Tamotsu Fukuda (Professional Colleague) — Works alongside in the investigation team
• Sakaido / Akihito Narihisago → Sarina Togo (Professional Superior) — Reports to Sarina in the investigation team

Story Dynamics

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

• Sakaido / Akihito Narihisago → Koharu Hondomachi (Alliance Partner) — Collaborate on solving cases
• Sakaido / Akihito Narihisago → Funetaro Momoki (Alliance Teammate) — Work together in the investigation team

Story Analysis

The season follows investigations across fragmented mental worlds while the Kura faces escalating threats, internal disruption, and a final institutional crisis.

Plot Progression

1. Season 1: Fragmented Investigation — A brilliant detective awakens in a fragmented world, and the Kura begins assembling clues. The Perforator case immediately demonstrates the danger of the investigation.
2. Season 1: Escalating Cases — The investigation enters a new killer's id well while a detective's past becomes increasingly important. A serial killer's seventh victim raises the urgency of the police response.
3. Season 1: Gravedigger Breakthrough — The Gravedigger case gives an investigator a major role and produces a reward after severe officer losses. The wider search for the hidden serial threat continues.
4. Season 1: Reality Unravels — The Metropolitan Police and the Wellside pursue parallel rescue and investigative efforts. A familiar world and uncertainty about dreams challenge the detectives' understanding of reality.
5. Season 1: Kura In Crisis — The detectives struggle to escape their id wells as the Kura is thrown into chaos. An escape leads to a final confrontation in which the institution itself must be saved.