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).
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.
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". 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.
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 25 December, it was announced that all the Holostars members would receive new costumes on 3 January, 2021, commemorating New Year's.
On 9 January, he opened his membership feature.
On March 20, Shien reached 100.000 subscribers, being the third Holostars member to reach this milestone.
On 13 July, hololive's Japanese Twitter account announced that every Holostars member would get 2.0 version of their 2D model.
On 6 August, hololive's Japanese Twitter announced that Shien and Oga would receive "Summer" costumes. They revealed the new costume on 10 August.
- Main page: Kageyama Shien/Discography
|Just Follow Stars||as HOLOSTARS commemorating the group's 2nd anniversary||28 June 2021|
|Digital Release • Music Video|
On 10 October, 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. 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, it was announced that Holostars goods would be sold at Animate Girls Festival Aozora Marche, held on November 7-8, 2020, and on 28 October, 2020, it was announced that Holostars would be participating in the event as guests. 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.
On 28 January, 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.
From 25 until 27 June, all Holostars members participated in their 2nd anniversary event "Our Rally 2021", the event featured 3 Holostars in each day of the event, Shien participated on the 3rd day. On the final day of the event, an original song Just Follow Stars was released on the official Holostars channel featuring all members singing.
On 22 July 2021, Shien participated on the Fall Guys tournament VTuber Fall Guys Party with fellow Holostars members; Hanasaki Miyabi, Arurandeisu and Aragami Oga as "Team LobStars". In the final rankings, they ranked 1st place.
Mascot and Fans
- Shien's mascot is a cat named "Nekoyama Shien" (猫山シエン), which was drawn by Aragami Oga.
- Shien also has two minions, "Koyama" (小山) and "Nakayama" (中山).
- His fanbase is officially called "Shiengumi" (シエン組), although he usually calls his fans his "subordinates" (部下たち).
- 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.
- "Babumagadokide" (ばぶ魔ヶ刻で), along with Aragami Oga and 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.
- "Enten-ka" (円天家), along with Kishido Temma.
- "Shikaku" (シカく), along with Kazami Kuku and Hanayura Kanon.
- "Koukakidou Lobstars" (甲殻奇動ロブスターズ), along with Hanasaki Miyabi, Arurandeisu and Aragami Oga.
- 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.
- 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.
- 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.
- His fetish is asses without thigh gaps, as when the legs are closed, it jiggles due to the "fleshiness".
- One of Shien's running gags is him using an echo filter on his mic, often at abrupt times.
- He shares the same character designer with Shirayuki Tomoe from Nijisanji.
- Because of this, he calls Tomoe "Ane-san" (姐さん).
- 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.
- Sometimes new viewers mistake him as a dog, cat or even a skunk.
- During his birthday stream, he revealed that when he hit around 20 years old, he went drinking without knowing his alcohol tolerance. He merrily went to an izakaya, had six cocktails of Kahlua Milk and vomitted so much he puked blood soon after, causing the realization that he can't drink, only able to do so moderately.
- During the aftermath of the VTuber Fall Guys Party tournament, Team Lobstars had considered doing a 3D Fall Guys of some sort after they all get their 3D.
- In Shien's one year anniversary stream, he mentioned that within just one year they lost 3 out of 12 Holostars members. Even though it's just currently the 9 of them, they're all working very hard. Further stating that from time to time, he'll see comments asking for a 4th generation already and understanding that people are hyped for new things. However, Shien noted that they aren't some gacha pulls but real people with feelings. To be clear, he is not against new members but ask that everyone support the current 9 members that are here now. 
- Rikka had also stopped by the stream and commented that in their hears they are always 12 members and Shien agreed cementing the statement to be true as they'll never forget.
- Shien Ch.影山シエン - YouTube channel
- Kageyama Shien's corporate profile on hololive.tv (English)
- Kageyama Shien's corporate profile on hololive.tv (Japanese)
- @kageyamashien - Twitter account
- @kageyamashien - TwitCasting channel
- #影山シエン - General
- #エンエアー - Stream talk
- #シエン組 - Fans
- #シ絵ン - Fan art
- #シ絵ッン - Fan art (NSFW)
- #お試シエン - Video clips
- #耳エン - Commentary on released voice dramas
- 影山シエン - Nicovideo Encycopedia
- 影山シエン - Pixiv Encyclopedia
- 影山シエン - Unofficial Holostars seesaawiki
- 影山紫炎 - Moegirl Encyclopedia
- Kageyama Shien - Hololive Fan Wiki
(hololive 0th Gen)
|Tokino Sora (🐻) A-chan and Ankimo · Roboco-san (🤖) · Sakura Miko (🌸) · Hoshimachi Suisei (☄️) · AZKi (⚒️)|
|1st Generation||Yozora Mel (🌟) · Aki Rosenthal (🍎) · Natsuiro Matsuri (🏮) · Shirakami Fubuki (🌽) · Akai Haato (❣️)|
|Retired||Hitomi Chris (🌰)|
|2nd Generation||Minato Aqua (⚓️) · Murasaki Shion (🌙) · Nakiri Ayame (👿) · Yuzuki Choco (🍫💋) · Oozora Subaru (🚑)|
|hololive GAMERS||Shirakami Fubuki (🌽) · Ookami Mio (🌲) · Nekomata Okayu (🍙) · Inugami Korone (🥐)|
|Usada Pekora (👯) · Uruha Rushia (🦋) · Shiranui Flare (🔥) · Shirogane Noel (⚔️) · Houshou Marine (🏴☠️)|
|4th Generation||Tsunomaki Watame (🐏) · Tokoyami Towa (👾) · Amane Kanata (💫) · Himemori Luna (🍬)|
|Retired||Kiryu Coco (🐉)|
|Yukihana Lamy (☃️) · Momosuzu Nene (🥟) · Shishiro Botan (♌) · Omaru Polka (🎪)|
|Retired||Mano Aloe (👅)|
|1st Generation||Airani Iofifteen (🎨) · Moona Hoshinova (🔮) · Ayunda Risu (🐿️)|
|2nd Generation||Kureiji Ollie (🧟♀️) · Anya Melfissa (🍂) · Pavolia Reine (🦚)|
-Myth- or holoMyth
|Ninomae Ina'nis (🐙) · Takanashi Kiara (🐔) · Watson Amelia (🔎) · Mori Calliope (💀) · Gawr Gura (🔱)|
|Project: HOPE||IRyS (💎)|
|Tsukumo Sana (🪐) · Ceres Fauna (🌿) · Ouro Kronii (⏳) · Nanashi Mumei (🪶) · Hakos Baelz (🎲)|
|1st Generation||Yogiri (🍼🎸) · Civia (🌙🦄) · Spade Echo (🍑) Everyone retired|
|2nd Generation||Rosalyn (📖) · Doris (🐟) · Artia (❄️) Everyone retired|
|1st Generation||Hanasaki Miyabi (🌺) · Kanade Izuru (🎸) · Arurandeisu (🍕) · Rikka (⚙️)|
|Retired||Yakushiji Suzaku (💊) · Kagami Kira (💙)|
|Astel Leda (🎭) · Kishido Temma (🦔💨) · Yukoku Roberu (🍷)|
|Kageyama Shien (🟣) · Aragami Oga (🐃)|
|Retired||Tsukishita Kaoru (💅)|
- 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]. YouTube.
- Aragami, O [aragamioga]. (2020, August 14). ハッシュタグは #魔フィア [Tweet]. Twitter.
- Shien's corporate profile. (n.d.). Official hololive Website.
- 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]. YouTube.
- 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]. YouTube.
- Kageyama, S [kageyamashien]. (2020, June 2). Twitter凍結解除から1ヶ月と2日......ようやく出所したぞ部下達ーー！！！！！！！！！！！！！！！！！！！！ [Tweet]. Twitter.
- 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]. YouTube.
- 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]. YouTube.
- 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‼️🐂 [Tweet]. Twitter.
- 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]. YouTube.
- Klaeia [_klaeia]. (2021, January 3). I had the incredible opportunity to do the Live2D modelling for @kageyamashien‘s New Year’s outfit! [Tweet]. Twitter.
- 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]. YouTube.
- Kageyama, S [kageyamashien]. (2021, March 20). 遂にチャンネル登録者数10万人超え達成！！！！！！！！！ [Tweet]. Twitter.
- Kageyama, S [Shien Ch.影山シエン]. (2021, July 7). 【告知枠】俺と皆の願いを叶えよう【影山シエン/ホロスターズ】 [Video File]. YouTube.
- Kageyama, S [Shien Ch.影山シエン]. (2021, July 10). 【#影山シエン3D】お前達、3Dお披露目開始だ！！！！！！【影山シエン/ホロスターズ】 [Video File]. YouTube.
- @hololivetv. (2021, July 7). 【🎉お知らせ🎉】 「ホロライブアプリ」において、「ホロスターズ」所属タレントのアップデートの実施が決定🙌✨ さらに表情が豊かとなった、彼らを楽しみにお待ちください😄 [Tweet]. Twitter.
- @hololivetv. (2021, August 6). 【🎉お知らせ🎉】 ホロスターズ3期生「#影山シエン」、「#荒咬オウガ」の2名による夏衣装お披露目リレーが、8月10日（火）20時より、それぞれのYouTubeチャンネルにて実施決定🥳✨ 🔽詳細はこちら🔽 https://prtimes.jp/main/html/rd/p/000000475.000030268.html [Tweet]. Twitter.
- 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]. YouTube.
- 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✨ [Tweet]. Twitter.
- holostarstv. (2020, October 28). 【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✨ [Tweet]. Twitter.
- 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！ [Press Release]. (2020, November 5). PR TIMES.
- holostarstv. (2021, January 28). 【🎉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‼ [Tweet]. Twitter.
- holostarstv. (2021, June 24). [1 Day To Go!📢] HOLOSTARS' 2nd anniversary event "俺たちの決起集会2021" will take place tomorrow‼️ [Tweet]. Twitter.
- Ponpoko [ponpokoka]. (2021, July 16). 7月22日20:00～ VTuberFallGuys運動会開催 YouTube公式企画でなんと去年に引き大会視点配信、ぽこピーでMCさせていただくことになりました 総勢30名以上のVTuber さらに今回はゲスト様チームも！ 今日21:00～参加者発表生放送です YouTube Gaming Crosszone [Tweet]. Twitter.
- Aragami, O [aragamioga]. (2020, May 25). こちら今回召喚した使い魔シエンになります [Tweet]. Twitter.
- Kageyama, S. [Shien Ch.影山シエン]. (2020, November 17). 【お絵かき】クリスターズに俺はなる【影山シエン/ホロスターズ】 [Video File]. YouTube.
- Kageyama, S [Shien Ch.影山シエン]. (2020, December 23). 【Shadowverse】漢による漢の為のシャドバ、ここに【#円天家】 [Video File]. YouTube.
- 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]. YouTube.
- 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]. YouTube.
- Aragami, O [Oga Ch.荒咬オウガ]. (2020, May 14). 【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】 [Video File]. YouTube.
- Kageyama, S [kageyamashien]. (2020, June 17). やっちまってくだせえ姐さん！！ [Tweet]. Twitter.
- 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]. YouTube.
- Kageyama, S [Shien Ch.影山シエン]. (2021, February 24). 【#影山シエン誕生祭2021】ボスは誕生日を部下達と迎えたい！【影山シエン/ホロスターズ】 [Video File]. YouTube.
- Shien Ch.影山シエン (2021 April 30)【1周年記念】これまでも、そしてこれからも【影山シエン/ホロスターズ】 [Video File] Retrieved from https://www.youtube.com/watch?v=BabHYCDPHMI