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AI: The Somnium Files Wiki
For other uses of the term Lemniscate, see Lemniscate (disambiguation)

A-set, a.k.a. Tesa, is an internet idol under the entertainment office Lemniscate. She is a cheerful 18-year-old girl from Tokyo, Japan who loves video games. She can sing, dance, and does Let’s Play videos in her spare time. She’s on a mission to win a Grammy and be Spike Chunsoft’s cutest internet idol ever!

The English channel Lemniscate English (originally named Lemniscate, and temporarily named Lemni Scate) and the Japanese channel Japan Lemniscate are A-set's two official YouTube channels.

Produced solely by Spike Chunsoft in real life, and with collaboration from Lemniscate within the universe of AI: THE SOMNIUM FILES, they are the official channels for the Net Idol and Internet Personality A-set, wherein she posted her official music video and her many vlog videos. She generally uploaded a trio of videos every week, one in English and two in Japanese, the second featuring Chinese subtitles.

A companion set of "To-Witter" and Weibo accounts were made alongside the Lemniscate channels. Both the Lemniscate channels and the To-Witter accounts combined make up what is commonly referred to by fans as the "A-set Augmented Reality Game," or "A-set ARG" for short. The English version of the To-Witter posts and accounts are archived on the page To-Witter Archives (Tesa), while the Japanese equivalents are archived on the pages To-Witter Archives (Aseton) and Weibo Archives. Despite the video series reaching its conclusion, the To-Witter and Weibo accounts still remain active to this day.

The video series started releasing on Wednesdays at 6:00 PM in the USA and Thursdays at 11:00 AM in Japan, which, based on timezone differences, is released simultaneously. However, once the United States Daylight Savings began on March 10th, all English A-set videos began releasing an hour earlier than Japan. Additionally, every video in the series released at 6:00 PM on Wednesdays, with two exceptions: "Sneak Peek at AI: THE SOMNIUM FILES LE/Day One Edition!" was delayed by half an hour to make time for a Spike Chunsoft livestream that day (a companion piece to the video itself), and "Graduation" was delayed to Friday at 10:00/11:00 to release alongside the Spike Chunsoft panel at Anime Expo. The original series began on January 30th, 2019, and it ultimately concluded on July 5th of that same year. Two bonus videos were released on September 17th and October 24th, 2019.

Story[]

TBA

Videos[]

For the main set of videos, there are a total of 23 videos released. 18 of those videos are considered numbered 0-17 (with the first video counting as number 0) based on a labeling system that began on the Japanese versions of the videos. 4 videos are considered part of an impostor's mini-series of videos loosely related to the main videos. The video titled "rw nw prt m hrw" is labeled as the "fAInal" video in the series, showing events that happen in AI: THE SOMNIUM FILES (chronologically set many months after the videos ended), despite being the 8th overall video.

With those videos, 2 more videos were released separate from the main run of vlog videos by A-set. The first one was "A-set's AI: THE SOMNIUM FILES Exclusive Launch Day Let's Play" while the second one was "AI: THE SOMNIUM FILES Let's Play Part 2! Ota is here!!!", both of which focus around A-set playing AI: THE SOMNIUM FILES just after launch. With these new additions, the total listing of videos rises to 25 videos.

In addition to those 25 videos, there are some additional companion videos sometimes released alongside this story. The first one is an untitled video released at Anime Expo 2018, considered to be the first A-set video ever produced. The next was the music video "Invincible Rainbow Arrow", released alongside the first video, "Uchikoshi Introduces Net Idol A-set!" The next was the Japanese version of "Zanki Zero Let's Play! Can Tesa Survive the Ruins?!" where, instead of playing Zanki Zero: Last Beginnings, A-set played Crypt of the NecroDancer on the video "【Crypt of the NecroDancer】To the Rhythm! The Long-Awaited Game LIVE! 【Aseton】". The following was the Spike Chunsoft 6-19-19 livestream on Twitch, which was streamed just before (and as a companion piece with) "Sneak Peek at AI: THE SOMNIUM FILES LE/Day One Edition!". The final one was the video simply titled "A-set", released in secret with a hidden QR Code within the video "You Won't Believe the Friend I Just Made!"

Normal Vlogs[]

Fans consider the vlog series to be divisible into 4 different story arcs. They refer to the first 8 videos in the series as the "Introduction Arc/NAIXATLOZ Arc," which kickstarted the videos. The next 4 videos are referred to as the "Impostor Arc," which are distinctly different from all the videos in the series. The following 4 videos are referred to as the "Let's Play Arc," acting as a return to form to the original arc of the series. And the final 7 videos are referred to as the "Final Arc/Filler Arc," which showed a shift in production quality from the rest of the series as it dwindled down to its conclusion.

# Video title Written Directed Date (2019) (USA and JP timezones)
00

EN: Uchikoshi Introduces Net Idol A-set!

JP: はじめまして、アイドルあせとんことA-setです!#00

CH: 大家好,我是偶像賽特兒~A-set!#00

A-set A-set Jan. 30th

Jan. 31st

01

EN: Tesa's Top 3 Favorite Snacks and Mascots!

JP: あせとんが好きなお菓子とキャラクターBEST3!#01

CH: 賽特兒最喜歡的零食和角色BEST3!#01

A-set A-set Feb. 6th

Feb. 7th

02 EN: Tesa Visits Maid Cafe Sunfish Pocket!

JP: 【メイド喫茶】サンフィッシュポケットにあせとんがやってきたよ!#02

CH:賽特兒今天來到了女僕咖啡廳SunfishPocket唷!#02

A-set A-set Feb. 13th

Feb. 14th

03 EN: There's No Way This Trespassing Idol Can Be This Cute!

JP: 【都市伝説】廃遊園地に忍び込んできたよ!

CH: 【都市傳說】偷偷潛入了廢棄的遊樂園裡唷!

A-set A-set Feb. 20th

Feb. 21st

04 EN: Tesa's Matsushita Diner Review! Omelet Rice Edition!

JP: 【食レポ】ロからヒヨコが生まれるオムライス特集

CH:【食記】美味到從嘴裡孵出小雞的蛋包飯特集

A-set A-set Feb. 27th

Feb. 28th

05 EN: A-set Reservations Unknown

JP: ぶらり正直あせ散歩の巻【街歩き回】

CH: 悠閒誠實賽特兒散步篇【東京觀光】

A-set A-set Mar. 6th

Mar. 7th

06 EN: 6

JP/CH: 【縺ソ繧九↑】#06

N/A Unknown Mar. 13th

Mar. 14th

fAInal EN: rw nw prt m hrw

JP/CH: 【閲覧注意】fAInal SOMNIUM

N/A Bloody Polar Bear Mar. 20th

Mar. 21st

EN: A-set's GDC All-Access Convention Report!

JP: 【GDC】アメリカに行ってきて超楽しかった!

CH: 【GDC】美國行超好玩!

A-set (impostor) A-set (impostor) Mar. 27th

Mar. 28th

EN: Sneaking Into ABIS!

JP: 【潜入捜査】ABIS特殊捜査班に潜入!

CH: 【中文字幕】【潛入搜查】潛入ABIS特殊搜查班!

A-set (impostor) A-set (impostor) Apr. 3rd

Apr. 4th

EN: Exploring a Dreamworld!

JP: 【夢ロケ】夢のようなロケに行ってきました!

CH: 【中文字幕】【夢境外景】拍了像夢境般的外景!

A-set (impostor) A-set (impostor) Apr. 10th

Apr. 11th

EN: This Is Your Idol

JP: 【夢ロケ2】みんなの揮発性溶媒だよ!

CH: 【中文字幕】【夢境外景2】我是大家的揮發性溶劑唷!

A-set (impostor) A-set (impostor) Apr. 17th

Apr. 18th

07 En: Zanki Zero Let's Play! Can Tesa Survive the Ruins?!

JP/CH: (See Below)

A-set A-set Apr. 24th (US)
08 EN: It’s time to talk about the Cyclops Case (might lose subscribers for this...)

JP: 【神社】強引にサイクロプス事件についてはなす!【あせとん】

CH: 【中文字幕】【神社】強制講解獨眼巨人連續命案!【賽特兒】

A-set A-set May 1st

May 2nd

09 EN: My 10-Day Vacation Diary

JP: 【絵日記】10連休の思いで【あせとん】

CH: 【中文字幕】【繪圖日記】10連假的正確過法【賽特兒】

A-set A-set May 8th

May 9th

10 EN: AI: THE SOMNIUM FILES Let's Play! Detective Tesa!

JP: 【ゲーム実況】発売前の『AI:ソムニウムファイル』をプレイしてみた!!【あせとん】

CH: 【中文字幕】【遊戲實況】試玩發售前的遊戲新作《AI:夢境檔案》!!【賽特兒】

A-set (video);

Kotaro Uchikoshi (game)

A-set (video);

Kotaro Uchikoshi (game)

May 15th

May 16th

11 EN: That Time I Got Forced To Do Impressions by an Egyptian God

JP: 【アドリブ】神にモノマネを強制させられる!【あせとん】

CH: 【中文字幕】【即興表演】被神明強制玩模仿遊戲【賽特兒】

A-set A-set May 22nd

May 23rd

12 EN: Tesa's Spirited Away Adventure: Picture Book Edition!

JP: 【アドリブ2】A-setが神隠しにあい、絵本かかされました【あせとん】

CH: 【中文字幕】【即興表演2】A-set被神隱抓去畫繪本【賽特兒】

A-set A-set May 29th

May 30th

13 EN: Tesa Answers Over 30 Questions at Super Speed!

JP: 質問】30個以上の質問に高速で答えるっ!【あせとん】

CH: 【問答單元】超高速回答30個以上的提問!【賽特兒】

A-set A-set Jun. 5th

Jun. 6th

14 EN: "Invincible Rainbow Arrow" Dance feat. Mizuki, Ota, and...White Horse Woman?!

JP: 【踊ってもらってみた】応太、みずき、白馬による『虹ノ矢ハ折レナイ』【あせとん】

CH: 【舞蹈試跳】應太、瑞希、神秘的白馬試跳《堅韌的虹之箭》【賽特兒】

A-set A-set (full video);

Ota Matsushita and

Mizuki (dance video)

Jun. 12th

Jun. 13th

15 EN: Sneak Peek at AI: THE SOMNIUM FILES LE/Day One Edition!

JP: 【告知】『AI:ソムニウムファイル』早期購入特典ゲットだぜ!【あせとん】

CH: 【告知】《AI:夢境檔案》預購特典大公開!【賽特兒】

A-set A-set Jun. 19th

Jun. 20th

16 EN: You Won't Believe the Friend I Just Made!

JP: 【奇跡】すごい友達出来ちゃった!【あせとん】

CH: 【奇蹟】交到了超~厲害的朋友!【賽特兒】

A-set A-set Jun. 26th

Jun. 27th

17 EN: Graduation

JP: 卒業式:序

CH: 畢業典禮:序

A-set A-set Jul. 5th

Jul. 6th

Extra vlogs[]

Two extra vlog videos were released on September 17th and October 24th, following the conclusion of the original run of vlog videos on June 5th. They are not considered part of the main vlog series.

# Video title Written Directed Date (2019) (USA and JP timezones)
18 EN: A-set's AI: THE SOMNIUM FILES Exclusive Launch Day Let's Play

JP: 【ここまでみせるかゲーム実況】待ったナシ!発売直前『AI ソムニウムファイル』をいけるとこまでプレイしてみた!!【あせとん】

CH: 【遊戲實況】超級特別企劃!在《AI 夢境檔案》發售前先行試玩!!【賽特兒】

A-set (video);

Kotaro Uchikoshi (game)

A-set (video);

Kotaro Uchikoshi (game)

Sep. 17th

Sep. 18th

19 EN: AI: THE SOMNIUM FILES Let's Play Part 2! Ota is here!!!

JP: 【夢のゲーム実況】ゲームデート?イリス困惑!『AI:ソムニウムファイル』をとことん楽しんでみた!!!【あせとん】

CH: 【超夢幻遊戲實況】遊戲約會?伊麗絲超困惑!一起大玩特玩《AI: 夢境檔案》!!!【賽特兒】

A-set (video);

Kotaro Uchikoshi (game)

A-set (video);

Kotaro Uchikoshi (game)

Oct. 24th

Oct. 31st

Bonus videos[]

The following bonus videos are related to the YouTube series, and in fact some are posted on the channel, but do not count as a proper "weekly vlog video", and thus hard to list. For direct video associations, check out the Notes section and the release date included

Video title Written by Directed by Release date (USA and JP timezones) Notes
Iris Sagan's Anime Expo video (unofficial titled) A-set A-set Jul. 5th, 2018 (EN) First A-set video premiered at AX 2018; never officially published online

EN: Invincible Rainbow Arrow

JP: 虹ノ失ハ折レナイ

CH: 堅韌的虹之箭

A-set (lyrics) Renju Okiura (music composition) Jan. 30th

Jan. 31st

Music video companion to "Uchikoshi Introduces Net Idol A-set!"
TL: 【Crypt of the NecroDancer】To the Rhythm! The Long-Awaited Game LIVE! 【Aseton】JP: 【クリプト・オブ・ネクロダンサー】リズムでたおせ!念願のゲーム実況!【あせとん】

CH: 【中文字幕】【節奏地牢】用節奏感戰鬥!終於錄了遊戲實況!【賽特兒】

A-set A-set Apr. 25th (JP) A completely different version of "Zanki Zero Let's Play! Can Tesa Survive the Ruins?!" for JP.
Spike Chunsoft News! 6-19-19 Stream* Spike Chunsoft Ari Advincula and Mimi Saito Jun. 19th (EN) Companion livestream to "Sneak Peek at AI: THE SOMNIUM FILES LE/Day One Edition!"
EN: A-set

JP: あせとん

CH: 賽特兒

A-set A-set Jun. 26th

Jun. 27th

Secret video hidden within "You Won't Believe the Friend I Just Made!"
Spike Chunsoft's AI Community Panel Spike Chunsoft Spike Chunsoft (panel itself); @mimzy630 (livestream) Jul. 5th Panel held at Anime Expo 2019, where A-set and Uchikoshi made an appearance and premiered the video "Graduation"

Full ARG Order[]

The full ARG encompasses the YouTube videos, the different To-Witter accounts associated, and other supplementary articles and such that are referenced or tied to the story. The overall narrative is split into either the English continuity (Tesa) and the Japanese continuity (Aseton), as tweets from both sides don't always match up properly. As such, the stories are considered connected yet separate.

For those wishing to experience the full ARG in the order in which the content was dolled out to fans, the following list narrows down the entire experience for fans. This list only includes the Tesa continuity, as the Aseton continuity is mostly untranslated and unverified. You can find the archive for all of the English tweets here. For those looking for the Japanese tweets, look here. A playlist including most of the videos listed can be found here.

A-set's Caricatures[]

Amongst the characters that appear in the video series, A-set also has a gallery of chibi caricatures that act as representations of previous characters that have been featured before.

A-set Chibi[]

This chibi-version of A-set is the idol's default avatar when representing herself in her drawings. She appears whenever an imaginary scenario devised by A-set is portrayed in drawings, such as A-set's various impressions.

Her appearances include:

Evil A-set Chibi[]

This chibi-version of A-set is an alternate evil-looking version of A-set Chibi. She appears mostly as a reflective character that A-set can react with, such as the Q&A, where Evil A-set Chibi asks questions while the real A-set answers them.

Ota Chibi[]

This chibi-version of Ota Matsushita is a chibi drawing made by A-set, made to represent Ota. His appearances have been very minor, mostly appearing along with the rest of the cast.

Horus Chibi[]

The first of A-set's caricatures in the Lemniscate series, he's a representation of the Egyptian god Horus. While first appearing is A-set's story of the god's adventure, he has since appeared as part of the gallery, including forcing A-set into ad-libbing.

Bastet Chibi[]

The second of A-set's caricatures in the Lemniscate series, she's a representation of the Egyptian goddess Bastet. She has appeared as part of A-set's gallery of caricatures, including forcing A-set into ad-libbing.

Trivia[]

  • The standard schedule for videos in the original series had each English video released at 6:00 PM every Wednesday. The number 6 is a key number within AI: THE SOMNIUM FILES, appearing in many aspects of the story.
  • The English channel temporarily went by the name "Lemni Scate" for a day, soon after the release of the video "rw nw prt m hrw," which was potentially done in reference to the video's content, in which A-set is cut in half by an ice-cutting machine.

Navigation[]

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!!!
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