Kageyama Shien

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).

Profile
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.

Personality
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.

Background
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.

2020
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.

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

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

2021
On January 3, he revealed his new year's costume, which was modelled by Klaeia.

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 7 July, he announced that he will receive his 3D model. His 3D unveiling stream was performed on 10 July.

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.

Discography

 * ''Main page: Kageyama Shien/Discography

2020
On 2 August, Shien entered Shibuya Hal's VTuber Apex Legends Tournament alongside Hanasaki Miyabi and Rikka under their group name "Star☆Sweeper". In the final rankings, they ranked 20th place.

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.

2021
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！).

Relationships

 * 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.

Trivia

 * 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 hearts they are always 12 members and Shien agreed cementing the statement to be true as they'll never forget.

Media

 * 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

Twitter hashtags

 * #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

Further readings

 * 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