Character Relationship Map: Platinum Data

Characters

• Ryuhei Kagura (played by Kazunari Ninomiya) — protagonist

  A scientist who developed the DNA Investigation System. Suspected of murdering researchers, he has dissociative identity disorder and seeks answers about the system and its creators.

• Reiji Asama (played by Etsushi Toyokawa) — supporting

  A police investigator placed in charge of a covert team investigating the deaths of five people connected to DNA analysis. He attempts to stop Kagura.

• Takashi Shiga (played by Katsuhisa Namase) — supporting

  The head of the Special Analysis Research Institute, where the DNA Investigation System is tested.

• Saki Tateshina (played by Kiko Mizuhara) — supporting

  A researcher connected to the conspiracy involving the hidden Mogul program and the secret Platinum Data.

Canonical Relationships

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

• Ryuhei Kagura → Takashi Shiga (Professional Scientific Colleague) — They are professionally connected through the development and institutional oversight of the DNA system.

  Ryuhei Kagura developed the DNA Investigation System at the Special Analysis Research Institute, which is headed by Takashi Shiga.

Story Dynamics

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

• Ryuhei Kagura → Saki Tateshina (Unknown Conspiracy Connection) — Kagura and Saki are connected through the conspiracy surrounding the DNA system and Mogul.

  The case reveals a deeper conspiracy involving Saki Tateshina and a hidden program called Mogul, while Kagura investigates the system and its creators...

• Reiji Asama → Ryuhei Kagura (Conflict Investigator And Suspect) — Asama investigates Kagura as a possible perpetrator while Kagura denies being the killer.

  Reiji Asama leads a covert team after evidence points toward Ryuhei Kagura as the last person known to have contacted the murdered researchers.

Story Analysis

A DNA investigation system exposes hidden privilege while a divided suspect searches for the truth behind its creation.

Plot Progression

1. The Database Demonstration — The police test Kagura's DNA Investigation System and witness it generate a detailed killer profile from a recovered hair. The resulting arrest establishes the system's apparent authority.
2. Murderous Evidence — Five deaths connected to DNA research shift the story from technological success to criminal investigation. Surveillance and contact records place Kagura under suspicion.
3. The Divided Suspect — Kagura flees questioning while a professor explains his dissociative identity disorder. The alternate personality's distinct behavior makes the murder case psychologically uncertain.
4. Secrets In The System — The investigation uncovers Saki's connection to Mogul and the hidden Platinum Data. The supposedly perfect database is revealed to protect powerful officials and their families.
5. The Minakami Standoff — Mogul is activated, copying NF data that may expose NF13. Asama confronts Kagura with armed officers at Minakami Research, leaving the truth and Kagura's identity unresolved.