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AI: The Somnium Files Wiki

The Tokyo Metropolitan Police Department (警視庁 Keishichō), or more commonly referred to as the [Tokyo] MPD and Metro for short, is the police force found in AI: THE SOMNIUM FILES, and featured in the Lemniscate YouTube series.

It's based off the real Tokyo MPD, which is the central Police Department that operates in the greater city of Tokyo, Japan. It has various branches all over the many districts, and it's home to numerous task forces. Its headquarters is located in Kasumigaseki, Chiyoda District.

In the universe of AI, they operate almost exactly the same, with the addition of the Advanced Brain Investigation Squad, a special task force led by Boss, which features the detective Kaname Date, his assistant AI-Ball, and the engineer Pewter.

Members[]

Traffic Division[]

The Traffic Division makes up the foot officers who patrol around the streets, reporting any activity and calls that may have happened throughout the city.

Response Officers[]

The response officers in AI are a team of lead police offers who investigate crime scenes as the first response team, making sure that the scene has been contained and finding any evidence that may be helpful.

Several response officers were the ones who found Shoko Nadami's corpse after they received an anonymous call from Ota Matsushita.

Criminal Investigation Division[]

The Criminal Investigation Division is one of the larger divisions within the Police Department. They investigate crimes that have occurred throughout the city, and catch the criminals for prosecution.

Forensic Units[]

The forensic officers are a special category of response officers. They are in charge of conducting forensic tests on the crime scenes, such as lifting fingerprints and footprints, as well as testing blood. It's expected of them to have at least a basic understanding of chemical science in order to conduct experiments.

So far, only one forensic officer is known:

Detective Unit[]

The detectives are a special category of police officer within the force. Detectives are the officers who investigate a general crime on a wider level than simply the crime scene, such as interviewing witnesses and capturing suspects. While response officers are in charge of gathering evidence of the crime, detectives are in charge of using said evidence and apply it to logical reasoning in order to solve crimes and mysteries.

So far, only two detectives are known within the force, and only one of them present by 2019:

Crime Prevention Division[]

The Organized Crime Prevention Division (犯罪対策課, Hanzai Taisaku-ka) is another division within the Depatrment.

Advanced Brain Investigation Squad[]

The Advanced Brain Investigation Squad, or ABIS, is a special designated squad within the Tokyo Metropolitan Police Department, consisting of special detectives and officers. Unlike regular detectives, who investigate any regular crime that may occur, ABIS investigates crimes of unnatural or psychological nature, thanks to their special equipment known as the Psync Machine, which allows a user to dive into the subconscious dreams of a sleeping subject, and gather mental testimony and evidence as such.

In 2019, there are at least 9 members included within ABIS, consisting of a squad captain, an engineer, 6 different "special agents" —also referred to as Psyncers—, and an A.I. assistant to at least one of these Psyncers. The status of various members changes depending on the timeline, such as the squad leader, Boss, dying in two separate timelines, and the engineer, Pewter, being arrested in the main timeline.

In 2025, a new Psyncer is added to the team:

  • Shizue "Boss" Kuranushi – Squad Leader (2013-2019/ongoing)
  • Futa "Pewter" Amamona – Main Engineer and Scientist (2013-2019/ongoing)
  • Kaname Date - Special Agent and Psyncer (2014-ongoing)
  • AI-Ball – Assistant Agent (2014-ongoing)
  • Mizuki Okiura – Special Agent and Psyncer (2025- )
    • Temporary Psyncer (2019)
  • 5 unknown special agents

Trivia[]

TBA

Navigation[]

AI: THE SOMNIUM FILES
Media
AI: THE SOMNIUM FILESAI: THE SOMNIUM FILES DEMORaiNBOW AFFaiR Complete SoundtrackREVERIES IN THE RaiN SoundtrackTHOUGHTS REMaiN BELOW Artbook
Characters
Kaname DateAI-Ball/AibaIris Sagan/A-setOta MatsushitaMizuki OkiuraBossPewterNew Cyclops Killer
Hitomi SaganMayumi MatsushitaRenju OkiuraMamaShoko NadamiSo SejimaMoma KumakuraRohan KumakuraCyclops Serial Killer
#89FalcoBodyguardsTakero MatsushitaManaka IwaiSaito SejimaYakuza AYakuza BNurseReceptionistMermaidTaxi DriverInspector
Locations
Tokyo
Chiyoda District: Police Headquarters (Boss's Office; Psync Room; Interrogation Room) • Sunfish Pocket
Koto District: Harbor Warehouse District (Cold Storage Warehouse) • Date Residence
Meguro District: Sagan ResidenceTiefblau
Minato District: Sejima ResidenceKumakura OfficeIkume ShrineLemniscateCentral Hospital
Near Kabasaki District: Bloom ParkOld Chemical PlantMatsushita Diner
Shinjuku District: Golden Yokocho (Marble)
Other: Fuchu City (Fuchu Prison) • Akikawa ValleyOkutama MountainsEitoku High
Somnia
SINKIN' IN THE BRaiN (Spoiler) • PSYNCIN' IN THE PaiN (Spoiler)
PSYNCIN' IN THE VaiN (Spoiler) • PSYNCIN' IN THE SWaiN (Spoiler)
PSYNCIN' IN THE SUSTaiN (Spoiler) • PSYNCIN' IN THE CAPTaiN (Spoiler)
PSYNCIN' IN THE CURTaiN (Spoiler) • PSYNCIN' IN THE REFRaiN (Spoiler)
PSYNCIN' IN THE VILLaiN (Spoiler) • PSYNCIN' IN THE MaiN: 1 (Spoiler)
PSYNCIN' IN THE MaiN: 2 (Spoiler)
PSYNCIN' IN THE MOUNTaiN (Spoiler) • PSYNCIN' IN THE CHaiN (Spoiler)
Chapters
Red Route: sigAIsaikAImeikAIsyokubAIrihAI
youdAIjikAIzugAIsyokuzAI
Yellow Route: syougAIseisAIhiAIsanpAI
Green Route: gumAIjukkAIkikAIjinnAIihAI
Purple Route: keitAIgyoukAIkyuusAIsyuurAIirAIdakkAIkekkAI
Pink Route: kenzAIjutAIkokkAIsousAIhakAIkassAI
Organizations
Tokyo Metropolitan Police Department (Advanced Brain Investigation Squad) • Ujisaki Family (Kumakura FamilyKumakura Estates) • Secret Society NAIXATLOZForeign Mercenaries
LemniscateSunfish PocketMarbleTiefblauFamiSto8-12Elgorg
Items
Wadjet SystemEvolverLight Synaptic Nerve Connection DeviceDate's CarShovelForgeOdoroki-man ChocolateGeostationary Satellite X00639
Events
Chemical Plant ExplosionOriginal Cyclops Serial KillingsBreak-In at Sagan ResidenceNew Cyclops Serial KillingsIncident at Minato District HighwayDisappearance of Renju OkiuraOperation: Iris Rescue
Full List of Events
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