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

Yūsuke Kozaki (コザキユースケ, Kozaki Yūsuke) the character designer for AI: THE SOMNIUM FILES, as well as a character mentioned in the Lemniscate YouTube series.

He is a famous illustrator who designed the outfit for the Net Idol A-set.

In real life, he's a manga artist, and a character designer for various anime and video games. He's the main character designer for AI: THE SOMNIUM FILES, working together with Kotaro Uchikoshi and Spike Chunsoft.

In the AI Universe[]

At some point in time, Yūsuke Kozaki was hired (presumably by Kotaro Uchikoshi) to work on an outfit design for the up-and-coming idol A-set. Once completed, his design became the main outfit for A-set, and being the signature clothes she wears in her content.[1]

In Real Life[]

He loooves hotdogs!


Year Title Work Role Notes
1997 Kaeru wa Tori Tsudzuke Manga Artist Monthly Young Magazine, one-shot
1998 Mi Kakunin Higō Shōjo Kaoru Manga Artist Bessatsu Monthly Young Magazine, one-shot
2001 Naizo-kun Manga Artist Monthly Young Magazine, web manga
2001 Spiral Manga Artist Bessatsu Pachislot Panic 7
2002-2012 Karasuma Kyoko no Jikenbo Manga Artist BStreetMonthly Comic Birz
2003 Chick Dismantler Manga Artist Blade Gunz, one-shot
2005 Speed Grapher Anime Character Designer
2005 Osu! Tatakae! Ouendan Video Game Artist
2005-2008 Tokyo Karasu Manga Character Designer Robot
2006-2007 Intrigue in the Bakumatsu – Irohanihoheto Anime Character Designer
2007 No More Heroes Video Game Character Designer
2008 Chūmon Shiyou ze! Ore-tachi no Sekai Video Game Character Designer
2009 Half-Minute Hero Video Game Character Designer
2010 No More Heroes: Heroes' Paradise Video Game Character Designer
2010 No More Heroes 2: Desperate Struggle Video Game Character Designer
2010 No More Heroes 2: Desperate Struggle Erotic Comic Manga Artist
2011 Ace Combat: Assault Horizon Video Game Character Designer
2011–present Donyatsu Manga Artist Young Gangan
2012 Fire Emblem Awakening Video Game Character Designer
2012 Liberation Maiden Video Game Character Designer
2012 Puzzle & Dragons Video Game Character Designer
2012 Unchain Blaze Video Game Character Designer Hilda only
2012-2017 Tokyo Karasu Manga Story Monthly Sunday Gene-X, Character Designer from 2012-2013
2013 Liberation Maiden SIN Video Game Character Designer
2014 Ranko Tsukigime's Longest Day Video Game Character Designer
2015 Tekken 7 Video Game Character Designer Lucky Chloe only
2015 Fire Emblem Fates Video Game Character Designer
2016 Bubuki Buranki Anime Character Designer
2016 Under the Dog Anime Character Designer
2016 Pokemon GO Video Game Character Designer Team Leaders and Professor Willow design, official player character artwork
2017 Fire Emblem Heroes Video Game Character Designer
2017 Xenoblade Chronicles 2 Video Game Character Designer Aegaeon and Agate design
2019 Daemon X Machina Video Game Character Designer
2019 AI: THE SOMNIUM FILES Video Game Character Designer
2021 No More Heroes III Video Game Character Designer
2022 AI: THE SOMNIUM FILES - nirvanA Initiative Video Game Character Designer

External Links[]

Lemniscate YouTube Series
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
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
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
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
LemniscateSpike ChunsoftSecret Society NAIXATLOZGame Developers ConferenceSunfish PocketMarbleTokyo Metropolitan Police Department (Advanced Brain Investigation Squad) • Anime Expo
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
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!!!