History ShoutOut / AITheSomniumFiles

** One poster in Boss's office next to the boy band group poster has a small picture of [[VideoGame/Danganronpa2GoodbyeDespair Usami]] in the corner.

** In [[spoiler: Mayumi's Somnium]], there is an autograph from Junko Enoshima. Examining it will trigger the opening riff of "Mr. Monokuma's Lesson".

** When Date finds [[spoiler: Manaka’s]] frozen corpse, he temporarily refers to her as Alice, short for [[VisualNovel/NineHoursNinePersonsNineDoors “All-Ice”]].

-->'''Aiba:''' Adrian!
-->'''Date:''' [[Film/{{Rocky}} Rocky]]!

* In PSYNCIN' IN THE [=CAPTaiN=], if you have Mizuki look at "This CD," one of the [=CDs=] is titled "[[Literature/TheHitchhikersGuideToTheGalaxy1 LUE 42]], the answer to the ultimate question."

* In PSYNCIN' IN THE [=CAPTaiN=], if you have Mizuki look at "This CD," one of the CDs is titled "[[Literature/TheHitchhikersGuideToTheGalaxy1 LUE 42]], the answer to the ultimate question."

* When observing a mysterious figure in one of Iris's Somnia, Date says the figure is Futoshi, and complains [[Anime/DarlingInTheFranxx "You're just gonna leave Ikuno behind?" ]]

** If you examine a broken Panda ride at the scene of the crime when you are accompanied by Iris, she will say that she hopes the ''black and white bear doesn't punish her''.

** Examining the dashboard with Iris in the car at one point will trigger this dialogue:

* Iris's favorite game is called [=ShovelForge=], a clear reference to VideoGame/{{Minecraft}}. The glossary even explicitly makes the connection while saying the name was changed for legal reasons.

* While explaining the Mandela Effect, Iris quotes an "[[{{Franchise/Pokemon}} electric mouse from that video game]]" and its tail being commonly misremembered to have a ''black tip'' as an example. She also mentions "[[Literature/TheBerenstainBears the name of a kid's book with the bears having different spellings]]", since people commonly think that the name is "Barenstein" not "Barenstain".

* Examining the island in So's garden at one point has Date mention that "little island" translates to "kojima" in Japanese.

** Ota's Tokusatsu belt and the theme that plays during his Somnium clearly references ''Series/KamenRiderV3''. He even says quotes from several ''Franchise/KamenRider'' series:

* In the beginning when Syncing for the first time, Aiba appears in a [[Franchise/{{Terminator}} kneeling pose with electricity surrounding her.]]

* When observing a mysterious figure in one of Iris's Somniums, Date says the figure is Futoshi, and complains [[Anime/DarlingInTheFranxx "You're just gonna leave Ikuno behind?" ]]

* When Date asks Iris what she would do if she stops time, she says she would try to catch a sky fish. This is a reference to how you obtain the Sky Fish soul in ''VideoGame/CastlevaniaChroniclesOfSorrow''.

** One of the location title cards has a bunch of ads. One of those ads uses the image of Zero (Gasmask and hoodie version) from 999.

* Lemniscate is a reference to fan translator group [[https://lemniscatranslations.wordpress.com/ Lemnisca]] whose foundation was inspired by their love of [=Ever17=] and had interviewed Uchikoshi prior to the release of this game.

* Having Aiba kick the forklift in So's somnium has her quip "So this is the [[VideoGame/StreetFighterII bonus stage]]!" before beating the crap out of said forklift.

* After [[spoiler:glitching out Iris's [=ShovelForge=] dream]], Date asks if it's August 32nd, a reference to a [[https://youtu.be/wkPuMO4H9QU?t=401 famous glitch]] in the Japan-only game ''Boku no Natsuyasumi''. The art style in this part of the dream also resembles some of the more colorful texture sets in ''VideoGame/LSDDreamEmulator''.

* While explaing the Mandela Effect, Iris quotes an "[[{{Franchise/Pokemon}} electric mouse from that video game]]" and its tail being commonly misremembered to have a ''black tip'' as an example. She also mentions "[[Literature/TheBerenstainBears the name of a kid's book with the bears having different spellings]]", since people commonly think that the name is "Barenstein" not "Barenstain".

* In Ota's Somnium:

** Examining one of the autographs in the Matsushita Diner when [[spoiler:within Mayumi's Somnium]] has Aiba observe the name to read "Hongo" and that she can't picture his face. [[spoiler:Gentaro Hongo, aka Ace, the BigBad of ''999'', was face-blind.]]

* During Ota's Psync session, Aiba has the option to skate on a patch of ice to destroy it, with Date jokingly calling her [[Anime/YuriOnIce Yuri Katsuki]].
* Also during the Psync with Ota, Aiba can punch a metal plate. While she does so, she asks Date if he's upset, to which he replies that he's not upset, referencing a skit from ''Manga/PopTeamEpic''.

* Examining an oil drum with Iris in the cold storage will prompt her to say "Hi, I'm ''[[{{Anime/Doraemon}} Drum-aemon]]''!"

* Lemniscate is a reference to fan translator group [[https://lemniscatranslations.wordpress.com/ Lemnisca]] who had interviewed Uchikoshi prior to the release of this game.

* During the epilogue, [[spoiler: Moma asks Date if he can try to get him a "[[VideoGame/DragonQuest Puff-puff]]" from Tesa]].

* Examining either of the dragon statues in the Kumakura office leads to Date wishing for panties, with Aiba replying that the dragon isn't [[Franchise/DragonBall Shenron]]

* When examining a floating panda head in a certain somnium, one of the options is smack down. Choosing this will have Aiba jump up and smack the floating head while saying "I see it, the view from the top". A clear shout-out to Hinata Shouyou from the volleyball manga ''Manga/{{Haikyuu}}''.

* When examining a floating panda head in a certain somnium, one of the options is smack down. Choosing this will have Aiba jump up and smack the floating head while saying "I see it, the view from the top". A clear shout-out to Hinata Shouyou from the volleyball manga Manga/{{Haikyuu}}.

* When examining a floating panda head in a certain somnium, one of the options is smack down. Choosing this will have Aiba jump up and smack the floating head while saying "I see it, the view from the top". A clear shout-out to Hinata Shouyou from the volleyball anime Haikyu!!