AI: The Somnium Files Wiki
AI: The Somnium Files Wiki

Day 2: Saturday -saikAI- (2日目: 土曜日 -再會-, 2-Nichi-me: Doyōbi -saikAI-; lit. Day 2: Saturday -Reunion-) is a chapter featured in AI: THE SOMNIUM FILES.

It is the third chapter of the game. It covers Kaname Date's investigation of Shoko Nadami's murder, including his meeting of Ota Matsushita, Iris Sagan, and Hitomi Sagan.

Case File Synopsis

The day after Shoko's corpse was discovered, Date visited ABIS HQ to exchange information with Boss. Aiba claimed to know who reported the body...

His name is Ota Matsushita. Date arrived at the lobby of the entertainment agency Lemniscate to look for him. He met the idol Iris Sagan and agreed to allow her to accompany him on the investigation. Going back to Bloom Park with her, Date found more clues. Date took Iris home and met her mother, Hitomi Sagan. All Date could do was stare. She looked exactly like the woman from his dream. Still muddled from the experience, Date returned to ABIS HQ to check in on Mizuki Okiura, the girl from the merry-go-round.

Story Summary

ABIS HQ, Boss's Office, Saturday 9:21 AM

Boss at her office.

Date went over the status of the investigation with Boss: Mizuki was traumatized and unable to speak, Renju could not be contacted the night of the murder, and the person who reported the crime was still unidentified. Date also asked Boss about the case six years ago, but she refused to elaborate. Eventually, Aiba came out of Date's eye socket to report her discovery that Ota Matsushita had reported the crime. Date and Aiba left for Matsushita Diner to question Ota.

Matsushita Diner, Saturday 10:18 AM

Mayumi at the diner.

Date found Mayumi Matsushita upon arriving at the diner. She informed Date that Ota was likely hanging out at a production office because of his obsession with a particular idol, but she was unable to recall the name of either. Using Aiba's x-ray vision, Date examined a figure Ota ordered to identify the idol as A-set and the production company as Lemniscate—a name Date recognized as Renju Okiura's company. After confirming the company name with Mayumi, Date and Aiba left for the offices.

Lemniscate Office, Saturday 11:45 AM

Ota hanging out at Lemniscate.

In the Lemniscate lobby, Date found Ota Matsushita waiting for Iris to finish recording a podcast. After he refused to answer any questions, Aiba hacked Ota's laptop to discover he was sockpuppeting for Iris on To-Witter, using sub accounts to insult her, while defending her with his own account. Ota agreed to talk after Date threatened to tell others about the sockpuppeting. Ota explained that he went to Bloom Park to meet Mizuki after she got a NILE message from someone asking her to come to the merry-go-round. There, the two discovered Shoko's body, causing Ota to panic, drop his phone, and run away, leaving Mizuki behind. Ota also explained that he met Mizuki a year prior as a fellow fan of A-set, and that she occasionally proofread his light novels.

A-set blackmailing Date.

After some time, A-set returned from her recording session. She introduced herself to Date and explained that she learned Ota saw the body when she asked about the murder. When asked about Shoko, neither her nor Ota were aware that she was Mizuki's mother or Renju's ex-wife. Date and Aiba determined they had no new information to gain and set to leave, but A-set insisted on coming to the crime scene. With Ota's help, she took a video of her hugging Date and begging him not to leave, then used the video to blackmail him into taking her along.

Driving, Saturday

Date and A-set driving from Lemniscate to Bloom Park.

On the drive to Bloom Park, Date asked A-set additional questions about herself. He learned that her fame came from streaming online, and she got her job at Lemniscate thanks to Renju's friendship with her mother. She also asked Date about the department he worked for, using the video she took as leverage. Date argued that the video could ruin her idol career, but she insisted it was okay—she knew she was going to die soon. After brushing the comment off as a joke, she threatened to post the video again, forcing Date to explain ABIS and Psyncing. Date also learned that her real name was Iris Sagan. Upon hearing her name, a memory came to Date of playing "ratty cake" with a younger Iris.

Bloom Park, Saturday 1:12 PM

Date carrying Iris out of the park.

Date reexamined the crime scene, and noticed the lack of blood on the horse Shoko was tied to. Aiba checked her previous footage of the scene to confirm that no blood had ever been there, leading Date to conclude that the body had been moved after death. Meanwhile, Iris eagerly attempted to investigate. She theorized that the crime had been a ritual murder, connecting "horse" to "Horus," and the missing left eye to the Eye of Providence. Her explanation revealed that Ota told her the ice pick was stabbed into Shoko's eye. Date also explained to Iris that the Kabasaki District was restricted due to an explosion eight years prior at an old chemical plant.

As Date and Iris began to leave, Iris suddenly collapsed. Date offered to give her a piggyback ride out of the park—and while doing so, learned from Aiba that she weighed 105 pounds.

Driving, Saturday

Iris sticking her hand out the window.

On his way to drop Iris off at home, Date asked Iris how she was feeling. Iris jokingly threatened to throw up in the car, and opened the window, remarking that she felt warm. After Date and Iris bickered about her sticking her hand out of the window, Iris told Date she felt as if she had met him before.

Sagan Residence, Saturday 3:09 PM

Hitomi at her home.

Date initially declined Iris's offer to come inside, until he saw Hitomi. He recognized her as the woman who had been shot in his dream, and recognized the interior of the house as well. Inside, Date asked Iris and Hitomi questions. He learned that Hitomi was a teacher, both Iris and Hitomi had grown up in the same house, and that Hitomi had known Renju for 20 years since they first met in high school. Date also learned that Hitomi was 37, meaning she would have been very young when she had Iris—Hitomi explained that she had never been married. She also explained that she was acquainted with Shoko, but did not know her well. While drinking their tea, Date noticed that Hitomi seemed unable to use her right arm, to which Hitomi explained it had locked up on her. After saying his goodbyes, Date left for ABIS.

Driving, Saturday

Date driving from Sagan Residence to HQ.

Aiba went over the facts of the case with Date. When going over the timeline of events, Date asked Aiba if it was possible to determine who sent Mizuki the NILE message calling her to Bloom Park. Aiba agreed to hack into the phone to find out the sender, but explained that it would take time due to NILE's security protocols.

ABIS HQ, Saturday 

Boss's Office, Saturday 4:26 PM

Mizuki in Boss's office.

Date arrived at ABIS to find Mizuki, still unable to speak. Boss explained how she had gotten Mizuki from the hospital, and asked Date to Psync with her.

Psync Control Room, Saturday

Pewter preparing for Mizuki's Psync.

In the Psync Room, Boss told Date that he might be able to learn what Mizuki saw at the crime scene by Psyncing with her, as well as potentially heal her aphonia. She also mentioned that Renju never visited Mizuki at the hospital.

Psync Room, Saturday

Mizuki being Psynced.

Just before Psyncing, Date explained the process to Mizuki to help calm her down, and promised to go out with her for food after the case was over.



AI: THE SOMNIUM FILES spoilers from beyond this chapter!

References to Media and Pop Culture

  • During the 9:21 AM investigation segment in Boss's Office:
    • If you speak with Boss about the case 6 years ago a second time, she refuses to state anything about the case, even if she is showered by "Dom P." at a club at Kabukicho. Dom P. refers to Dom Pérignon, a brand of champagne, commonly served in host/hostess clubs, which are common in Kabukicho.
    • If you examine the "Skis," Boss will ask Date if he has heard of "the murder case at the resort called Spur." This is a direct reference to the game Kamaitachi no Yoru (localized as Banshee's Last Cry in North America), also made by Spike Chunsoft, in which a series of murders occurs at the ski lodge named "Spur" (localized as "Snowflake Inn").[1]
  • During the 10:18 AM investigation segment at Matsushita Diner:
    • The delivery box containing the A-set figure has the logo of "," a parody of the distribution company "Amazon."[2] The store selling the figure is called "Great Grin," a parody of Good Smile Company, a manufacturing company known for creating pop-culture figurines.[3]
    • If you examine the "Cushion," Aiba mentions that it reminds her of a "Funniest Props Compilation" video she saw, to which Date replies that she reached far back for that reference. This is a reference to the improvisational comedy TV show(s) Whose Line Is It Anyway?[4] The original British TV series ran from 1988 to 1999, while the American TV series ran from 1998 to 2007, before being revitalized in 2013.[5] One of the "games" played in these shows is "Props," in which the hosts play around with props and improvise jokes together. Searching for "funniest props compilations" results in numerous compilation videos on YouTube from the series, uploaded over the years.
      • In Japanese, the reference was to a Japanese comedy show in which, much like Whose Line?, the guests would perform skits. The winner of the competition would be given a cushion to sit on, hence the Cushion reminding Aiba of it. According to Lead Editor Alex Flagg, the Japanese show in question was aired a long time as well, making it an obscure reference even in Japan.[4]
  • During the 11:45 AM investigation segment at the Lemniscate Entertainment Offices, Ota states that he uses the pen name "Odoin Kyoma" when publishing his light novels (which Aiba reveals to be false). Odoin Kyoma is a reference to the character "Hououin Kyouma" from the Science Adventure series, notably the Steins;Gate sub-series.[6] According to the FILEs, the name "Odoin Kyoma" was taken by writing the original name (鳳凰院凶真, Kyouma Hououin) in hiragana, then changing the characters to kanji.
  • During the 1:12 PM investigation segment at Bloom Park:
    • If you examine the "Panda Ride," Iris will comment on the black-and-white bear, and wonders if she is "gonna be punished" before explaining that it reminder her of a video game she likes. This is a reference to Danganronpa, another game series developed by Spike Chunsoft. In that series, a psychotic black-and-white teddy bear rules over a murder game as its host, and enacts "punishments" to certain individuals by killing them.[7][8]
    • If you examine the "Control Room," Iris will jokingly ask if it is a phone booth. On a second click, she says, "But hey, if you sense any trouble, you can hop in and change!" This is a reference to the comic book character Superman, who would change from his Clark Kent persona into his superhero costume inside a phone booth.[9]
  • During the second investigation segment in Date's car (between Bloom Park and the Sagan Residence), if you examine the "Rearview Mirror" twice, Date and Iris play The Name Game using the word "meanie." The Name Game originates from the 1964 song "The Name Game" by Shirley Ellis[10], and has since become a common rhyme played by schoolchildren.
AI: THE SOMNIUM FILES spoilers from beyond this chapter!
  • Date mentions that he cannot believe he could remember that rhyme. It is possible that Date used to play the Name Game with Iris herself 6 years ago, during the time he was dating Hitomi and before he got amnesia.
  • During the investigation segment in the Psync Control Room, if you examine the "CRT Monitor," Aiba will tell Date that "the girl from that horror movie" is coming out of a well in the monitor. This is a reference to The Ring, a Japanese horror movie franchise in which a cursed videotape shows a video of a girl crawling out a well, until the girl emerges from the screen to kill the victims.[11]


Kaname DateAibaIris Sagan/A-setOta MatsushitaMizuki OkiuraBossPewterNew Cyclops Killer
Hitomi SaganMayumi MatsushitaRenju OkiuraMamaShoko NadamiSo SejimaMoma KumakuraRohan KumakuraCyclops Serial Killer
#89FalcoBodyguardsTakero MatsushitaManaka IwaiSaito SejimaYakuza AYakuza BNurseReceptionistMermaidTaxi DriverInspector
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
SINKIN' IN THE BRaiN (Spoiler) • PSYNCIN' IN THE PaiN (Spoiler)
PSYNCIN' IN THE VaiN (Spoiler) • PSYNCIN' IN THE SWaiN (Spoiler)
PSYNCIN' IN THE VILLaiN (Spoiler) • PSYNCIN' IN THE MaiN: 1 (Spoiler)
PSYNCIN' IN THE MaiN: 2 (Spoiler)
Red Route: sigAIsaikAImeikAIsyokubAIrihAI
Yellow Route: syougAIseisAIhiAIsanpAI
Green Route: gumAIjukkAIkikAIjinnAIihAI
Purple Route: keitAIgyoukAIkyuusAIsyuurAIirAIdakkAIkekkAI
Pink Route: kenzAIjutAIkokkAIsousAIhakAIkassAI
Tokyo Metropolitan Police Department (Advanced Brain Investigation Squad) • Ujisaki Family (Kumakura FamilyKumakura Estates) • Secret Society NAIXATLOZForeign Mercenaries
LemniscateSunfish PocketMarbleTiefblauFamiSto8-12Elgorg
Wadjet SystemEvolverLight Synaptic Nerve Connection DeviceDate's CarShovelForgeOdoroki-man ChocolateGeostationary Satellite X00639
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


  1. Kamaitachi no Yoru on Wikipedia
  2. Amazon on Wikipedia
  3. Good Smile Company on Wikipedia
  4. 4.0 4.1 Alex Flagg on Discord: "It is absolutely a Whose Line reference"
  5. "Games" Section of Whose Line Is It Anyway? on Wikipedia
  6. Hououin Kyoma's page (as Rintaro Okabe) in the Steins;Gate Wiki
  7. Monokuma in the Danganronpa Wiki
  8. "Punishments" in the Danganronpa Wiki
  9. Article on Superman and Phone Booths
  10. Shirley Ellis – The Name Game on YouTube
  11. The Ring on Wikipedia