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Day 4: Monday -jikAI- (4日目:月曜日 -自戒-, 4-Nichi-me: Getsuyōbi -jikAI-, lit. Day 4: Monday -Self-Discipline-) is a chapter featured in AI: THE SOMNIUM FILES.

It is the eleventh chapter featured in the Ota Route. It covers the interrogation of Ota Matsushita and subsequent investigation of Mayumi Matsushita.

Case File Synopsis[]

Date saw the floral pattern kitchen knife in Ota's Somnium. That knife had a message on the handle saying, "Mom, I love you always." Date interrogated Ota further...

Date believed that the Odoroki-man chocolate proved that Mayumi was present at the scene of the crime. There was also the issue of the floral print kitchen knife. Ota insisted that his mom couldn't possibly be the culprit. Regardless, Date confronted Mayumi, who confessed to the crime.

Story Summary[]

ABIS HQ, Interrogation Room, Monday[]

Ota's interrogation.

Date interrogated Ota about the incident at the cold storage warehouse. Date asked Ota if Mayumi was at the warehouse, due to her fingerprints on the Odoroki-man Chocolate and the floral knife the culprit used. Ota insisted that his mother could not be the killer, but he did discuss the possibility that she might have hired someone to kill Iris Sagan. Date assured Ota that it was unlikely Mayumi could be the killer, since she was shopping while the van drove off. However, he still needed to talk to her to learn the truth of the incident.

Matsushita Diner, Monday 10:11 PM[]

Mayumi melancholic at the diner.

Date saw Mayumi as soon as he entered the diner. She told him that she remembered everything about the warehouse, and confessed to the crime.

Trivia[]

Etymology[]

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

References[]

TBA

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