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Overview
ARG


"I have to find her. She's more important than any of you understand. But you'll see! You'll hear her music, just like I did! Then you'll see!"
—Ota Matsushita, on To-Witter

Ota Matsushita (真津下 応太, Matsushita Outa), known online as Mato and tAotemAs, is a main character in AI: THE SOMNIUM FILES. On To-Witter, his account is Mato @Ota_Matsushita, and on Discord, his account is @tAotemAs#3395.

Ota is a 24-year-old NEET, an enthusiastic follower of A-set, and an aspiring light novel author. He often comes across as cowardly and asocial. He has an unrequited crush on Iris.

In AI: THE SOMNIUM FILES, he was a primary person of interest during the New Cyclops Serial Killings, marked as a witness, suspect, and even victim depending on the branching story.

Design[]

Ota is 24 years old. He has brown hair, which is smooth bangs on the front but spiky from the back, with the majority of his hair covered by his red cap, and his eyes are a pale brown.

He wears a long-sleeved light-blue hooded sweater with the word GEEK on the front. Over this, he wears a grey zippered coat with a white star inscribed in a red and blue circle below each shoulder. He wears a red cap with goggles strapped above the bill. He carries a black backpack and wears a Rider Belt based around Kamen Rider.

Personality[]

Ota seems to be a normal irritable teenage boy, as he's very uncooperative when you first meet him. He also seems to have a bit of a rebellious side, seeing how he has a cell phone even though his mom doesn't want him to. He's also a huge fan of A-set and is desperate to get her attention, to the point where he makes multiple accounts online in order to insult her, and defend her at the same time.

Story[]


Early Life[]

Ota was born to Mayumi Matsushita and Takero Matsushita on June 8th, 1995. He lived at the Matsushita Diner his whole life, and grew up gaining an interest in animated series, video games, and sentai shows.

As a child, he developed an interest in collecting Odoroki-man Chocolate stickers. One day, when Ota was nine years old, Mayumi tried to buy some of his favorite chocolate as a gift, but she bought a Momonoki-man chocolate instead. Ota yelled at her for getting the brand wrong. Takero suggested getting her a Mother's Day gift to make it up to her, so they bought her a floral knife with a custom engraving on the handle ("Mom, I love you always") and a floral-pattern apron. Mayumi was moved to tears, and the three took a family photo together.

In 2011, the Kabasaki Chemical Plant explosion occurred. Because Bloom Park closed down, the diner lost a large portion of its customers, and was forced to go out of business. However, Ota's parents were determined to support him, so they took out a loan and continued working hard.

In 2013, Ota left to college. After his father died a year later, he dropped out and returned home. He told Mayumi he wanted to focus on his career writing light novels, and that he knew a publicist who could help him get started. However, Ota never published anything during his time at home.

Befriending Iris, Mizuki, and Amame[]

This section is a stub. Expansion needed.

Some time in the past, Ota met Iris Sagan and Mizuki, and as their friendships grew, he began to grow feelings for Iris. Ota and Iris spent a lot of time hanging out together, either shopping or at each other's houses. Once Iris started her net idol career as A-set and her videos on her Lemniscate channel, Ota was one of her biggest supporters.

Shoko Nadami's Case[]

On November 1st, 2019, Ota got a call from Mizuki after 8:00 PM. She told him that someone sent her a NILE message calling her to Bloom Park's merry-go-round, and she wanted him to come along since the area was restricted and she was scared to go alone. They arrived around 9:00 PM and discovered Shoko Nadami's body tied to one of the merry-go-round horses. Ota panicked and fled the scene, leaving Mizuki alone. He dropped his phone in a puddle, so he called the police with a nearby payphone.

The next day, Iris asked him if he knew anything about Shoko's murder, as it had been reported on the news. He told her he found the body and explained the details of the crime scene to her.

While waiting for Iris to finish recording a podcast, Ota met Kaname Date in the Lemniscate Entertainment Offices lobby. Date discovered the To-Witter sub-accounts Ota used to bash A-set while defending her on his main account. When Date threatened to tell others about the sockpuppeting, Ota agreed to talk, and told him about Mizuki contacting him, and later finding the body. He also explained how he met Mizuki, and the proofreading she did for him.

Eventually, Iris returned from her recording session, and Ota introduced her to Date. He asked Iris questions about the case, and she explained that Ota told her about finding the body. Before Date left, Iris asked Ota to film a video of her hugging Date and begging him not to leave, then used the video to blackmail him into taking her along to the crime scene.

A: New Cyclops Serial Killer[]

A: Witnessing "Renju" and "Iris"[]

On Saturday evening, Ota went to Akihabara to buy a new phone. While he was there, he witnessed Iris coming out of Sunfish Pocket around 6:00 PM, along with Saito Sejima in Renju Okiura's body. A few hours later, Ota spotted Renju's car stopped at a traffic light. To his surprise, he saw Iris (who was actually Saito at the time) behind the wheel, and asked what she was doing. Saito made up a lie about running an errand for Renju, and asked Ota to keep it a secret, since an idol driving without a license could damage her career.

TBA

AB: Runaway from Marble: Ota's Death[]

TBA

AA: Runaway from Matsushita Diner: Rescue of Iris[]

TBA

AA: Interrogation and Somnium[]

TBA

AAA: Mayumi's Arrest and Investigation[]

TBA

AAB: Hospital Rest[]

TBA

B: Disappearance of Renju Okiura[]

B: A-set's Visitor and Date[]

TBA

BA: Operation: Iris Rescue[]

TBA

BB: Operation: Iris and Hitomi Rescue[]

TBA

BB: Part-Time Employment[]

TBA

Appearances[]

AI: THE SOMNIUM FILES
Day 1: sigAI
Absent
BRaiN
Absent
Day 2: saikAI
Appears
PaiN
Absent
Day 2: meikAI Day 2: keitAI
Absent Absent
Day 3: syokubAI Day 3: gyoukAI
Appears Appears
VaiN VILLaiN
Absent Absent
Day 3: rihAI Day 3: gumAI Day 3: kyuusAI
Appears Appears Absent
Day 4: youdAI Day 4: jukkAI Day 4: syuurAI
Appears Appears Appears
SWaiN CURTaiN MaiN: 1
Appears Absent Absent
Day 4: jikAI Day 4: syougAI Day 4: kikAI Day 4: irAI Day 5: kenzAI
Appears Appears Absent Absent Appears
Day 5: zugAI Day 5: seisAI Day 5: jinnAI Day 5: dakkAI Day 5: jutAI
Appears Appears Mentioned Appears Mentioned
SUSTaiN REFRaiN MaiN: 2 MOUNTaiN
Appears Absent Absent Absent
Day 5: syokuzAI Day 5: ihAI Day 6: kekkAI Day 5: kokkAI
Appears Mentioned Absent Absent
Ota: END Day 6: hiAI Annihilation: END Iris: END Day 6: sousAI
Absent Absent
CAPTaiN CHaiN
Absent Absent
Day 5: ihAI Day 6: hakAI
Mentioned Appears
Mizuki: END Three Months Later: kassAI
Appears
Resolution: END


Gallery[]

Trivia[]

Etymology[]

  • Ota's online nickname, Mato, could have been made similar to A-set's fan name, Tesa, which is simply "A-set" in reverse. In lieu of this, Mato is likely a reverse of Ota Matsushita.

General[]

  • Ota was originally planned to be a completely disproportionate character compared to the rest of the cast in the game (much like certain characters in the Danganronpa series). While all character models would be made with human-accurate proportions, Ota was planned to be in a completely different style, standing at around waist-height and having an extremely large head, which makes him somewhat resemble his father. His beta design was a long-standing design that Yūsuke Kozaki had been waiting to use on a project, and decided to try out for Ota. However, the disproportionate plan for Ota was scrapped, as it would be difficult to model and would look too detached from the other characters in the game, and they were not confident it would look good.[3]
    • The team's opinion on the scrapped idea changed once the movie Spider-Man: Into The Spider-verse was released on March 8th, 2019. Seeing the various disproportionate Spider-folk appear next to each other in the movie in a way that looked great made the team realize that the idea was possible. However, by then the game was nearly done, with the Lemniscate video series already airing for over a month.[3]
  • In the chapter saikAI, Aiba states that Ota is registered as a "person of interest" in the MPD database. It's unclear what exactly he has done in order to be present in their database to begin with.
  • Ota's Rider Belt appears to be based around the Kamen Rider transformation belts, specifically the Double Typhoon, worn by Kamen Rider V3 in the Kamen Rider series.
  • Ota's laptop has various stickers placed on its cover, a decent number of them being A-set memorabilia.[4] These stickers are the same ones to be included in the Special Agent Edition of AI: THE SOMNIUM FILES.[5]
  • According to an interview with Siliconera, Ota is Director Kotaro Uchikoshi's favorite character among the greyed out characters at the bottom of the cover art. Since Assistant Director Akira Okada answered Aiba, a character not included among the greyed-out characters, it was unclear on how specific Uchikoshi's answer was, until the Q&A panel at Anime Expo 2019, where he stated that, if he had to choose, his favorite overall character would be Kaname Date.[3]
    • However, he has stated numerous times that he loves all his characters, so any answer would potentially not be a true answer.
  • Ota's exact sexuality is unclear. His ARG counterpart has implied that he would devote himself to Iris regardless of gender[6], and his game counterpart has made a handful of suggestive jokes at Kaname Date throughout the game. The Lead Editor for the game, Alex Flagg, has stated, "When you're as horny as Ota, sexuality loses all meaning." However, any exact statements have gone unconfirmed.[7]
  • In a fan-made Character Poll for AI: THE SOMNIUM FILES held on Twitter, Ota Matsushita came in 14th place, tying with Saito Sejima. Ota himself on To-Witter found himself surprised at how low he was on the popularity rankings.[8]
  • Based on references and mentions he has given, it is possible that Ota is a fan of the following franchises:
    • Re:Zero –Starting Life in Another World–[9][10]
    • Kill la Kill[9]
    • The Sword Art Online franchise, particularly Sword Art Online Alternative Gun Gale Online[9]
    • Oreimo[9]
    • Eromanga Sensei[9]
    • The DARLING in the FRANXX[9][11]
    • SSSS.GRIDMAN[9]
    • The Kamen Rider series[9]
    • Virtual YouTuber "Kizuna Ai"[9]
    • Virtual YouTuber "Nekomiya Hinata"[9]
    • Virtual YouTuber "Kaguya Luna"[9]
    • Virtual YouTuber "Mirai Akari"[9]
    • TRIGGER anime studio[9]
    • J-LIST online store[9]
    • FAKKU Hentai Publisher[9]
    • Vocaloid "Hatsune Miku"[9][12]
    • The Danganronpa series[13][14][15]
    • Don't Toy With Me, Miss Nagatoro[16]
    • The Pokemon franchise[17][18]
    • My Neighbor Totoro[19]
    • The Simpsons[19]
    • My Hero Academia[19][20][10][21][22]
    • NieR:Automata[23][11]
    • King of the Hill[24]
    • Fate/Grand Order[25]
    • Cowboy Bebop[26]
    • Kantai Collection[26]
    • Girls' Frontier[26]
    • Azur Lane[26]
    • The Love Live! School Idol Project franchise[27]
    • KonoSuba: God's Blessing on this Wonderful World![28]
    • Team Fortress 2[29]
    • Is It Wrong to Try to Pick Up Girls in a Dungeon?[10]
    • Rascal Does Not Dream of Bunny Girl Senpai[10]
    • Steven Universe[18]
    • Log Horizon[30]
    • Mob Psycho 100[31]
    • The Melancholy of Haruhi Suzumiya, specifically the anime[32]
    • Pop Team Epic[33]
    • JoJo's Bizarre Adventure[34]
    • One Punch Man[34]
    • Ghostbusters[35]
    • New Game![36]
    • Satoshi Kon and his films, specifically Perfect Blue[37]
    • The Yu-Gi-Oh! anime[38]
    • Cardcaptor Sakura[39]
    • John Mulaney[40]
    • Outlaw Star[41]
    • Space Battleship Yamato, in particular the reboot Space Battleship Yamato 2199[41]
    • The Zero Escape series[41]
    • Punch Line[41]
    • The Office[41]
    • K-On![42]
    • The Eric Andre Show[43]
    • The Science Adventure series, particularly Steins;Gate[44]
    • Super Smash Bros. series, particularly Super Smash Bros. Ultimate[45][46]
    • Undertale[45]
    • The Emperor's New Groove[47]
    • YU-NO: A Girl Who Chants Love at the Bound of this World, particularly the 2017/2019 remake[48][49]
    • Laid-Back Camp[50]
    • The YouTube channel Fredrik Knudsen and its "Down the Rabbit Hole" series[51]
    • The Atelier series, particularly Atelier Ryza: Ever Darkness & the Secret Hideout[52]
    • SpongeBob SquarePants[53]
    • Hunter × Hunter[54]
    • and more (to be added)

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
Lemniscate YouTube Series
Media
Lemniscate (channel)To-Witter Archives 2019 (Tesa)To-Witter Archives 2020 (Tesa)

To-Witter Archives Aseton: Main PageAseton Plays DanganronpaRevisiting the YouTube seriesTokyo Game Show & AI Launch DayAseton Zero EscapeAseton Terraria PioneerCrypt of AsetonAseton of HyruleIndivisible Aseton
Weibo Archives
REVERIES IN THE RaiN Soundtrack
A-set To-Witter (English)A-set To-Witter (Japanese)a_set_on Weibo (Chinese)Mato To-WitterKotaro Uchikoshi Eng To-WitterFluerichaji To-Witter

Love Songs From Another WorldVirtuoso of the Space Time Continuum
Characters
A-set (impostor) • Ota MatsushitaMizukiKotaro UchikoshiFluerichajiWhite Horse WomanBloody Polar Bear
Renju OkiuraHitomi SaganMayumi MatsushitaMama****** ****AI-BallBossPewterYūsuke KozakiAkira OkadaCyclopsAmame DoiHorusBastet • "Uncle" • Missing Girl • Missing Girl's Parents
Locations
Tokyo: Sagan ResidenceLemniscate OfficeSunfish PocketKabasaki DistrictBloom Park (Somnium) • Old Chemical PlantMatsushita DinerIkume ShrineGolden Yokocho (Marble) • Harbor Warehouse District (Okiura Fishery Cold Storage Warehouse) • Sejima ResidencePolice Headquarters (Boss's Office/Psync Room) • Okutama Mountains
USA: San FranciscoCalifornia
Organizations
LemniscateSpike ChunsoftSecret Society NAIXATLOZGame Developers ConferenceSunfish PocketMarbleTokyo Metropolitan Police Department (Advanced Brain Investigation Squad) • Anime Expo
Events
A-set's video seriesCyclops Serial KillingsChemical Plant ExplosionDisappearance at Bloom ParkA-set's campaign against NAIXATLOZSpike Chunsoft's panel at GDC Disappearance of Iris SaganImpersonation of Iris SaganIris Sagan's playthrough of AI: THE SOMNIUM FILESVisit to the Somnium Files DiscordSpike Chunsoft's panel at Anime Expo 2019
Videos (Pre-release)
0: Uchikoshi Introduces Net Idol A-set! (Invincible Rainbow Arrow)
1: Tesa's Top 3 Favorite Snacks and Mascots!
2: Tesa Visits Maid Cafe Sunfish Pocket!
3: There's No Way This Trespassing Idol Can Be This Cute!
4: Tesa's Matsushita Diner Review! Omelet Rice Edition!
5: A-set Reservations Unknown
6
fAInal: rw nw prt m hrw
A-set's GDC All-Access Convention Report!
Sneaking Into ABIS!
Exploring a Dreamworld!
This Is Your Idol
7: Zanki Zero Let's Play! Can Tesa Survive the Ruins?! (Alt)
8: It’s time to talk about the Cyclops Case (might lose subscribers for this...)
9: My 10-Day Vacation Diary
10: AI: THE SOMNIUM FILES Let's Play! Detective Tesa!
11: That Time I Got Forced To Do Impressions by an Egyptian God
12: Tesa's Spirited Away Adventure: Picture Book Edition!
13: Tesa Answers Over 30 Questions at Super Speed!
14: "Invincible Rainbow Arrow" Dance feat. Mizuki, Ota, and...White Horse Woman?!
15: Sneak Peek at AI: THE SOMNIUM FILES LE/Day One Edition!
16: You Won't Believe the Friend I Just Made! (Secret video)
17: Graduation (AX Panel)
Videos (Post-release)
18: A-set's AI: THE SOMNIUM FILES Exclusive Launch Day Let's Play
19: AI: THE SOMNIUM FILES Let's Play Part 2! Ota is here!!!

References[]

  1. Tweet from JP A-set
  2. Tweet from JP A-set
  3. 3.0 3.1 3.2 Spike Chunsoft's Anime Expo 2019 AI: THE SOMNIUM FILES panel
  4. To-Witter Archives 2019 (Tesa): March 2nd
  5. A-set video: "Sneak Peek at AI: THE SOMNIUM FILES LE/Day One Edition!"
  6. To-Witter Archives 2019 (Tesa): March 29th
  7. Alex Flagg on Discord: "When you're as horny as Ota sexuality loses all meaning"
  8. To-Witter Archives 2019 (Tesa): October 21st
  9. 9.00 9.01 9.02 9.03 9.04 9.05 9.06 9.07 9.08 9.09 9.10 9.11 9.12 9.13 9.14 9.15 Mato's list of accounts he follows, which contain official accounts of many anime series and other pop-culture media.
  10. 10.0 10.1 10.2 10.3 To-Witter Archives 2019 (Tesa): April Fool's
  11. 11.0 11.1 To-Witter Archives 2019 (Tesa): April 14th
  12. To-Witter Archives 2019 (Tesa): April 2nd
  13. To-Witter Archives 2019 (Tesa): February 22nd
  14. To-Witter Archives 2019 (Tesa): April 10th (1st half)
  15. To-Witter Archives 2019 (Tesa): May 17th
  16. To-Witter Archives 2019 (Tesa): February 26th
  17. To-Witter Archives 2019 (Tesa): February 27th (1st half)
  18. 18.0 18.1 To-Witter Archives 2019 (Tesa): April 6th
  19. 19.0 19.1 19.2 To-Witter Archives 2019 (Tesa): March 1st
  20. To-Witter Archives 2019 (Tesa): March 30th
  21. To-Witter Archives 2019 (Tesa): April 12th
  22. To-Witter Archives 2020 (Tesa): February 3rd
  23. To-Witter Archives 2019 (Tesa): March 9th
  24. To-Witter Archives 2019 (Tesa): March 11th
  25. To-Witter Archives 2019 (Tesa): March 12th
  26. 26.0 26.1 26.2 26.3 Mato: "Those 'who would win in a fight' questions are boring. We get it already. The real important question is: Pirates vs. Ninjas vs. Knights vs. Samurai: who is SEXIER?" (Mar 12th), followed by Mato: "I mean I'm kinda leaning toward pirates because" [image included with tweet] (Mar 12th)
  27. To-Witter Archives 2019 (Tesa): March 13th (1st half)
  28. To-Witter Archives 2019 (Tesa): March 28th
  29. To-Witter Archives 2019 (Tesa): March 31st
  30. To-Witter Archives 2019 (Tesa): April 9th
  31. To-Witter Archives 2019 (Tesa): May 11th
  32. To-Witter Archives 2019 (Tesa): May 12th
  33. To-Witter Archives 2019 (Tesa): May 14th
  34. 34.0 34.1 To-Witter Archives 2019 (Tesa): May 19th
  35. To-Witter Archives 2019 (Tesa): May 20th
  36. To-Witter Archives 2019 (Tesa): May 24th
  37. To-Witter Archives 2019 (Tesa): May 28th
  38. To-Witter Archives 2019 (Tesa): June 5th (2nd half)
  39. To-Witter Archives 2019 (Tesa): June 18th
  40. To-Witter Archives 2019 (Tesa): July 12th
  41. 41.0 41.1 41.2 41.3 41.4 To-Witter Archives 2019 (Tesa): July 16th
  42. To-Witter Archives 2019 (Tesa): July 19th
  43. To-Witter Archives 2019 (Tesa): August 23rd
  44. To-Witter Archives 2019 (Tesa): September 3rd
  45. 45.0 45.1 To-Witter Archives 2019 (Tesa): September 4th
  46. To-Witter Archives 2019 (Tesa): October 8th
  47. To-Witter Archives 2019 (Tesa): September 12th
  48. To-Witter Archives 2019 (Tesa): September 25th
  49. To-Witter Archives 2019 (Tesa): October 2nd
  50. To-Witter Archives 2019 (Tesa): October 14th
  51. To-Witter Archives 2019 (Tesa): October 31st
  52. To-Witter Archives 2019 (Tesa): November 19th
  53. To-Witter Archives 2020 (Tesa): January 14th
  54. To-Witter Archives 2020 (Tesa): February 11th
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