Associated pages

Kageyama Shien (影山シエン) is a male Japanese Virtual YouTuber endorsed by hololive's branch Holostars. He is a member of its third generation alongside Aragami Oga, which was previously known as "TriNero" (トライネロ) prior to Tsukishita Kaoru's retirement. Shien and Oga then became known as "MaFia" (魔フィア).[2]

Introduction Video


【初配信】初めましてだ、影山シエン初陣!【ホロスターズ3期生 新人Vtuber】

Shien's introduction.


Shien is a jackal that sometimes can be quite dumb and naive, baby-like, even. Former TriNero member Tsukishita Kaoru described him as a man that misuses his handsome voice, and "if a bat maker gave him the world's best baseball bat, he'd use it for soccer".[3] Additionally, Aragami Oga, another member of TriNero, states that despite him being a mafia boss, he can't do anything without his subordinates. He further states that despite having good ears, he doesn't seem to listen to anyone.[4]


A mafia boss from the land of beastmen.

Came to our world in search of his missing best friend.

Was scouted by Shinove after coming to a standstill in his search.

Acts tougher than he really is but doesn't have the talent to be truly evil.[5]



His Twitter account was created in 10 April 2020; he made his first tweet on 27 April, his YouTube channel was created on 8 April, and his debut stream was performed on 30 April.


Shortly after his debut, his Twitter account was suspended because of his birth year being set to 2020. On 2 June, the Twitter suspension was lifted.

On 16 August, he released a cover of Fire◎Flower by halyosy, in which he sang with Rikka, Kanade Izuru and Astel Leda, making it his first cover song.[6]

On 27 September, he released his first solo cover song, KING by Kanaria.[7]

On 25 December, it was announced that all the Holostars members would receive new costumes on 3 January, 2021, commemorating New Year's.[8]


On January 3, he revealed his new year's costume,[9] which was modelled by Klaeia.[10]

On 9 January, he opened his membership feature.[11]

On March 20, Shien reached 100.000 subscribers, being the third Holostars to reach this milestone.[12]


On 10 October, 2020, Shien was a part of Waku Waku! VTuber Hiroba Online Vol. 2 (わくわく!VTuberひろば おんらいん Vol.2) along with Aragami Oga, Syukusei Batumaru and Boyacky from Yatterman Channel.[13] Fellow Holostars member Rikka and, as well as Nanase Taku, Akiyama Rentarou from Himashokudo and Hanagasa Ilya were also part of the event.

On 26 October, 2020, it was announced that Holostars goods would be sold at Animate Girls Festival Aozora Marche, held on November 7-8, 2020,[14] and on 29 October, 2020, it was announced that Holostars would be participating in the event as guests.[15] Shien is part of the "Virtual Clerk" (バーチャル店員) exhibition, the "Anibako" (アニバコ) program and the "Chatting Fes" (おしゃべりフェス) exhibition in the event.[16]

On 28 January, 2021, it was announced that "Net Talking Festival", an Holostars exclusive event, will be held on 14 February where fans can have a one-on-one chat with any of the Holostars members for 3 minutes, talking about their daily feelings of gratitude to an important person.[17]

Mascot and Fans

  • Shien's mascot is a cat named "Nekoyama Shien" (猫山シエン), which was drawn by Aragami Oga.[18]
  • His fanbase is officially called "Shiengumi" (シエン組).
  • After Shien says his opening greeting (お前たち,任務開始だ!), fans reply with "yes boss!" (イエスボス!).
  • When Shien ends the stream, fans say farewell by saying "good luck!" (グッドラック!).


  • Units and groups aside from TriNero and MaFia he is part of are:
    • "Star☆Sweeper" (スター☆スウィーパー), along with Hanasaki Miyabi and Rikka.
    • "Babudon" (ばぶどん), along with Yukoku Roberu.
    • "Shadowgear" (シャドウギア), along with Rikka.
    • "TsukiKageRiTem" (月影律天), along with Tsukishita Kaoru, Rikka and Kishido Temma.


  • He likes anmitsu, as well as omurice.
  • He dislikes oysters.
  • His favorite animal is the kuroshiba.
  • In the process of creating TriNero's Twitter accounts, they were cautioned seriously by Daidou Shinove, Holostars' manager, and mentioned that they had to be careful with the birthday settings, as your account would get locked if you were underage. Aragami Oga joked that because they debut in 2020, that would also be their birth year, which may have caused Shien to set 2020 as his birth year, thus causing his Twitter suspension.[4]
    • Shien's Twitter suspension has caused jokes between fans, saying that he was baby, as if he was born in 2020. Notable examples of the joke was when Shirakami Fubuki drew Shien as a baby, Aragami Oga displaying Shien with a pacifier in his mouth, as well as calling him a "babbling baby" in his debut stream, and Tsukishita Kaoru making Shien's drink a baby bottle in the first TriNero collab.
    • Along with that, because his Twitter was suspended, he couldn't set up his official fan mark, but the official Holostars Twitter confirmed that "🟣", a purple circle, was his fan mark, shown in schedules. However, fans used "🍼", a baby bottle, as an unofficial fan mark as part of the joke.
    • Ironically, he is lactose intolerant.[19]
  • Fans have stated how Shien's voice is very similar to that of voice actor Takahiro Sakurai's. Shien has even done some impressions of characters Sakurai has voiced, for example, Lucio from Granblue Fantasy[20].
  • His fetish is asses without thigh gaps, as when the legs are closed, it jiggles due to the "fleshiness".[21]
  • He shares the same character designer with Shirayuki Tomoe of Nijisanji.
  • He owns a toy sword called DX Kageyama Blade (DX影山刀) that comes with various voice lines, voiced by himself. Some of the voice lines include his stream greeting and ending lines as well as original special attack names.[22]

External Links


Twitter hashtags

Further readings

Hololive Logo.png
Solo Debutants
(hololive 0th Gen)
Tokino Sora (🐻) A-chan and Ankimo · 
Roboco (🤖) · 
Sakura Miko (🌸) · 
Hoshimachi Suisei (☄️) · 
AZKi (⚒️) · 
First Generation
Yozora Mel (🌟) · 
Aki Rosenthal (🍎) · 
Natsuiro Matsuri (🏮) · 
Shirakami Fubuki (🌽) · 
Akai Haato (❣️) · 
Second Generation
Minato Aqua (⚓️) · 
Murasaki Shion (🌙) · 
Nakiri Ayame (👿) · 
Yuzuki Choco (🍫💋) · 
Oozora Subaru (🚑) · 
hololive GAMERS
Shirakami Fubuki (🌽) · 
Ookami Mio (🌲) · 
Nekomata Okayu (🍙) · 
Inugami Korone (🥐) · 
Third Generation
(hololive Fantasy)
Usada Pekora (👯) · 
Uruha Rushia (🦋) · 
Shiranui Flare (🔥) · 
Shirogane Noel (⚔️) · 
Houshou Marine (🏴‍☠️) · 
Fourth Generation
Tsunomaki Watame (🐏) · 
Tokoyami Towa (👾) · 
Kiryu Coco (🐉) · 
Amane Kanata (💫) · 
Himemori Luna (🍬) · 
Fifth Generation
Yukihana Lamy (☃️) · 
Momosuzu Nene (🥟) · 
Shishiro Botan (♌) · 
Omaru Polka (🎪) · 
AZKi (⚒️) · 
Hitomi Chris (🌰) · 
Mano Aloe (👅) · 
hololive Indonesia
First Generation
Airani Iofifteen (🎨) · 
Moona Hoshinova (🔮) · 
Ayunda Risu (🐿️) · 
Second Generation
Kureiji Ollie (🧟‍♀️) · 
Anya Melfissa (🍂) · 
Pavolia Reine (🦚) · 
hololive English
First Generation
Ninomae Ina'nis (🐙) · 
Takanashi Kiara (🐔) · 
Watson Amelia (🔎) · 
Mori Calliope (💀) · 
Gawr Gura (🔱) · 
hololive China (Dissolved Branch)
First Generation
Yogiri (🍼🎸) · 
Civia (🌙🦄) · 
Spade Echo (🍑) · 
Everyone retired
Second Generation
Rosalyn (📖) · 
Doris (🐟) · 
Artia (❄️) · 
Everyone retired
Holostars Logo.png
First Generation
Hanasaki Miyabi (🌺) · 
Kanade Izuru (🎸) · 
Arurandeisu (🍕) · 
Rikka (⚙️) · 
Second Generation
(Sun Tempo)
Astel Leda (🎭) · 
Kishido Temma (🦔💨) · 
Yukoku Roberu (🍷) · 
Third Generation
Kageyama Shien (🟣) · 
Aragami Oga (🐃) · 
Yakushiji Suzaku (💊) · 
Tsukishita Kaoru (💅) · 
Kagami Kira (💙) · 


  1. 1.0 1.1 1.2 Kageyama, S. [Shien Ch.影山シエン] (2020, April 30)【初配信】初めましてだ、影山シエン初陣!【ホロスターズ3期生/新人Vtuber】[Video File] Retrieved from
  2. aragamioga (2020, August 14) 23:00からはシエンとアソビ大全だ! ハッシュタグは #魔フィア で行くぜ!よろしくな! [Tweet] Retrieved from:
  3. Tsukishita, K. [Kaoru Ch.月下カオル] (2020, April 29) 【#月下カオル初配信】どっかーーーん!月下カオルです。【ホロスターズ3期生/新人Vtuber】 [Video File] Retrieved from:
  4. 4.0 4.1 Aragami, O. [Oga Ch.荒咬オウガ] (2020, May 1) 「#荒咬オウガ初配信」~俺とオマエの出会い~(ホロスターズ) [Video File] Retrieved from:
  5. Shien's corporate profile on the hololive website
  6. Kageyama, S. [Shien Ch.影山シエン] (2020, August 16)【歌ってみた】Fire◎Flower covered by HOLOSTARS【律可/イヅル/アステル/シエン】 [Video File] Retrieved from:
  7. Kageyama, S. [Shien Ch.影山シエン] (2020, September 27) 【歌ってみた】KING - Kanaria / covered by 影山シエン [Video File] Retrieved from:
  8. holostarstv (2020, December 25) 【告知3】2021年1月3日、ホロスターズお正月新衣装お披露目リレー配信を行います また、お正月衣装に関連した新グッズの販売も予定しております こちらも配信時間、リレー順、グッズ詳細等は別途お知らせ致します。 #ホロスタお正月新衣装 #ホロスターズ [Tweet] Retrieved from:
  9. Kageyama, S. [Shien Ch.影山シエン] (2021, January 3) 【#ホロスタお正月新衣装】あけおめ!正月衣装お披露目任務、開始だ!【影山シエン/ホロスターズ】 [Video File] Retrieved from:
  10. @_klaelia (2021, January 3) I had the incredible opportunity to do the Live2D modelling for @kageyamashien‘s New Year’s outfit! ボスのお正月新衣装のLive2Dモデリングを担当させていただきました!! Illustrator: @morimokimori Base model: @MegaJujube #ホロスタお正月新衣装 [Tweet] Retrieved from:
  11. Kageyama, S. [Shien Ch.影山シエン] (2021, January 9) 【祝!!】メンバーシップ、来たれり【影山シエン/ホロスターズ】 [Video File] Retrieved from:
  12. 遂にチャンネル登録者数10万人超え達成!!!!!!!!! また一つデカい目標を達成出来た事も嬉しいし10万人届く瞬間を部下達と見届けられてよかった!!これからも色んな夢を叶える為に俺は進み続けていくぞ!!!! [Tweet] Retrieved from:
  13. [アキラボ公式チャンネル] (2020, October 10) 【冒頭無料配信】わくわく!VTuberひろば おんらいん Vol.2【トークショー 第2部】 [Video File] Retrieved from:
  14. holostarstv (2020, October 26) 【AGFグッズ情報】 11/7~8開催「AGFあおぞらマルシェ」ホロスターズブースにて販売を行うグッズラインナップをご紹介致します✨ 各種AGF限定グッズ販売に加えホロスターズ1周年記念グッズの一部再販を行います! なお、こちらのグッズは事後通販も予定しております。 #AGF_あおぞら #ホロスターズ [Tweet] Retrieved from:
  15. holostarstv (2020, October 29) 【AGFブース情報】 11/7~8開催「AGFあおぞらマルシェ」ホロスターズブースにて、VTuber体験アトラクションを展開致します✨ ぜひ、ブースNo.14「ホロスターズブース」へ遊びに来て下さい! 各アトラクションの出演者、出演タイムスケジュールは後日公開致します。 #AGF_あおぞら   #ホロスターズ [Tweet] Retrieved from:
  16. VTuber事務所「ホロスターズ」、「アニメイトガールズフェスティバルあおぞらマルシェ」ブース情報、グッズのラインナップなど詳細を発表! Retrieved from:
  17. 【お知らせ】 男性VTuberグループ「#ホロスターズ」のメンバーと対面で話せるオンラインイベント「ネットおしゃべりフェス on バレンタイン ホロスターズ」が2月14日(日)開催決定 本日17時よりチケット販売開始 詳細はこちら… #しゃべフェス Retrieved from:
  18. aragamioga (2020, May 25) こちら今回召喚した使い魔シエンになります #シ絵ン [Tweet] Retrieved from:
  19. Kageyama, S. [Shien Ch.影山シエン] (2020, September 11) 【朝活】はじめての朝活雑談【影山シエン/ホロスターズ】 [Video File] Retrieved from:
  20. Kageyama, S. [Shien Ch.影山シエン] (2020, May 18)【雑談】月曜お疲れ様!今日も生きててえらい!【ホロスターズ/影山シエン】[Video File] Retrieved from:
  21. Aragami, O. [Oga Ch.荒咬オウガ] 【飲んで雑談】~俺達とらい危族で飲んでます~【TriNero/ホロスターズ】 (2020, May 14) [Video File] Retrieved from:
  22. Kageyama, S. [Shien Ch.影山シエン] (2021, January 3) 【#ホロスタお正月新衣装】あけおめ!正月衣装お披露目任務、開始だ!【影山シエン/ホロスターズ】 [Video File] Retrieved from:
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