Hoshimachi Suisei (星街すいせい) is a female Japanese Virtual YouTuber associated with hololive. While originally an independent VTuber who eventually was recruited into hololive, she is currently part of "hololive 0th gen" alongside fellow solo debutants: Tokino Sora, Roboco, Sakura Miko and AZKi.
Suisei is a modest, multitalented singer and aspiring idol who is among the more level-headed members of hololive, though she also has a childish streak. After her unexpectedly compelling performance as a traitor in a game of Project Winter, she gained a reputation for remorseless sociopathy behind a facade of polite sweetness. No one seems to know how much of the "Psychopath Suisei" persona is real or not, but Suisei herself acknowledges that it is extremely funny and has referred to the incident on multiple occasions.
"It's your shooting star, your diamond in the rough, idol VTuber Hoshimachi Suisei!"
A forever 18 VTuber who deeply loves singing and idols.
Her dream is to one day hold a live concert in Tokyo Budokan.
Her Twitter account and YouTube channel were created on 18 March 2018. Her introduction video was uploaded four days later on 22 March.
On 21 June, she debuted her second 2D costume. Like her first one, her movements and animations were limited. However, this costume was later updated to have much more movement, which included her hair and hat.
On 1 July she became a member of a VTuber group called S:gnal. On 4 August, a month later, she announced on Twitter that she graduated from the group and resumed her activities as a solo idol a week later.
On 11 January, she revealed a third 2D costume.
On 19 May during AZKi's first live, she appeared as a surprise guest performer where she performed her second original song "天球、彗星は夜を跨いで" (Tenkyuu, Suisei wa Yoru wo Mataide). It was afterwards announced that AZKi and Suisei would be affiliated with INoNaKa Music (INNK MUSIC), a music label under hololive.
On 29 November, she published on Twitter that she would be transferred from Inonaka Music to hololive's main branch.
On 1 December, she announced on her Twitter account that she would get a brand new 2D model, this model was later revealed the same day during a stream on YouTube. With this stream her transfer to hololive became official.
On 2 January, she published on Twitter that she would get her second 2D costume (based on her new model). This was revealed to be a kimono in celebration of the new year, the same day as her YouTube channel.
On 19 January hololive's Twitter account published a tweet mentioning that Houshou Marine, Hoshimachi Suisei and Shiranui Flare would participate in a stream prior to hololive's 1st fes. Nonstop Story. The next day, in the same stream, it was revealed that the three of them would get their 3D model debut in said event, but that they would have a YouTube debut later. In Suisei's case, her stream was scheduled for March.
On 1 March, she appeared in her 3D model for the first time on YouTube during a stream.
On 10 November, hololive's official Twitter account announced that she and Shiranui Flare would get new 2D costumes.
On 12 November, she debuted her third 2D model, in this costume she wears a black dress with a blue jacket, both the dress and the jacket are decorated with blue ribbons and laces, she wears a black belt with the words: "Sphere" and "Comet", she uses orange socks and black and short black boots.
On 16 January, she reached 700,000 YouTube subscribers during an endurance singing stream.
On 29 January, her YouTube channel was demonetized for unknown reasons, as a result of this she made a redebut stream on 31 January, as part of "hololive Space gen 00" even using her original 2D model before her redesign.
On 26 February, Suisei announced on her Twitter account that her YouTube channel was available for monetization again.
On 16 March, she reached 800,000 YouTube subscribers.
On 13 April, she debuted her fourth original song "GHOST", after revealing it on her live concert "Space for Virtual GHOST".
- Main page: Hoshimachi Suisei/Discography
|NEXT COLOR PLANET|
|Release Date||22 March 2020|
|Digital Release • Music Video|
|Release Date||14 April 2021|
|Digital Release • Music Video|
- Her fanbase is officially called "Stargazers", while in Japanese they are called "Hoshiyomi" (星詠み)
- Considerably multi-talented as she is capable of drawing (her original image was drawn by herself), edit videos, sing, cook and is also a skilled gamer.
- Suisei lives with her older sister, who is referred to by fans as "Anemachi". Anemachi is extremely attached to Suisei and appears to be dependent on her for her cooking skills.
- She is notably good at playing competitive Tetris.
- The hashtag #星街すいせい3D (#HoshimachiSuisei3D) became a trending topic worldwide on Twitter when she debuted her 3D model on YouTube.
- Her birthday and her debut date are the same.
- A few years before considering being a VTuber, Suisei participated in several auditions for real-life idol agencies, but was rejected due to the "Jack of all trades, Master of none" trait, according to her. This led to her becoming a Virtual Idol, as a way of not giving up on her dream. However, she was already tired of trying by the beginning of 2019 as an indie Virtual Idol (since she worked in an izakaya [japanese pub], and also had to do the editing of her own videos and other VTubers). Suisei almost gave up, but decided to make one last try. She went to COVER Corp to audition for hololive, but was also rejected, apparently for the same reason as the real-life agencies, since COVER Corp considered that she had many skills (speaking, singing, dancing, drawing and as a gamer) that could let to failing trying to do everything due to an overload of work. She claims that after receiving rejection e-mail, she e-mailed back seeking for a second chance and is open for suggestion. As a result, hololive replied back to have a second talk; then they told her that she could join, but on the condition of joining INoNaKa Music and focus on music. After more difficulty in INoNaKa Music mostly due to company policy that nearly broke Suisei's heart, she was finally transferred to hololive officially. 
- On 11 January 2021, Suisei won the 2nd hololive Mario Kart 8 Deluxe Tournament, with 43 points.
- Suisei's surname, while officially written in English as "Hoshimachi", is often alternatively romanized as "Hoshimati" or "Hosimati" in her videos and account names.
- Suisei Channel - YouTube channel
- Hoshimachi Suisei's corporate profile on hololive.tv (EN)
- Hoshimachi Suisei's corporate profile on hololive.tv (JP)
- @suisei_hosimati - Twitter account
- @suisei_hosimati - Marshmallow account
- 星街彗星Official - bilibili channel
- Suisei Hoshimachi - Spotify page
- ツイフィール (TWPF)
- #星街すいせい - General
- #ほしまちすたじお - Stream talk
- #星詠み - Fans
- #ほしまちぎゃらりー - Fan art
- #すいせいみゅーじっく - Music Space
- 星街すいせい - Nicovideo Encyclopedia
- 星街すいせい - Pixiv Encyclopedia
- 星街すいせい - Unofficial hololive Seesaawiki
- 星街彗星 - Moegirl Encyclopedia
- Hoshimachi Suisei - Hololive Fan Wiki
- Hoshimachi Suisei on English Wikipedia
- _17meisai23 (2019, December 1) と言うことで…星街すいせいちゃんの新デザイン担当させていただきました…！！！☄️ どうぞ宜しくお願い致します🙇♂️ #ほしまちぎゃらりー [Tweet] Retrieved from https://twitter.com/_17meisai23/status/1201109953211064325
- rariemonn765 (2019, December 1) ホロライブ所属Vtuberの星街すいせいちゃん（@ suisei_hosimati）の新Live2Dモデルの制作を担当させていただきました！今からお披露目配信です！よろしくお願いします！[Tweet] Retrieved from https://twitter.com/rariemonn765/status/1201095842779713536
- yatsurugi_mmd (2020, March 1) VTuber星街すいせいちゃん(@suisei_hosimati)の良いカメラ（3Dモデル）を担当しました！ ということで、お祝い動画を作ってみました。そして今、YouTubeでお披露目生放送中です!! https://youtu.be/FZnG1t34wCs ぜひ観に行ってください! #星街すいせい #星街すいせい3D #ほしまちぎゃらりー #ホロライブ [Tweet] Retrieved from https://twitter.com/yatsurugi_mmd/status/1234087338201927680
- suisei_hosimati. (2018, April 2). B-W-HのBはバストはバストでもトップバストという意味なんだけど、すいちゃんは間違えてアンダーバストを記載しておりました……正確なやつはここに貼っとくね……みんなにドジっこすいちゃんが根付いてしまう……！！！！！！😱😱😱 [Tweet]. Retrieved from https://twitter.com/suisei_hosimati/status/980531574679588865
- Hoshimachi, S. [Suisei Channel]. (2019, July 23)【ProjectWinter】裏切者は誰だ！？雪山ホロ人狼【星街視点】[Video File]. Retrieved from https://youtu.be/GfbgRHGLOZw/
- [Profile on hololive.tv] Retrieved from https://en.hololive.tv/portfolio/items/433550
- Hoshimachi, S. [Suisei Channel] (2018, March 22) 【自己紹介】彗星の如くあらわれたアイドルVTuber！！！【#01】[Video File] Retrieved from https://youtu.be/1dOyVEls4pg
- Hoshimachi, S. [Suisei Channel] (2018, June 27) ほしまちすたじお【#3】[Video File] Retrieved from https://youtu.be/K1A2169xb68
- suisei_hosimati. (2018, August 4). 【お知らせ】1/2
再びソロアイドルへと戻りますが変わらぬ声援を頂けますと幸いです。(マネージャー) [Tweet]. Retrieved from https://twitter.com/suisei_hosimati/status/1025758283309576192
- Hoshimachi, S. [Suisei Channel] (2019, January 11) 【雑談＋歌】ほしまちすたじお【#10】[Video File] Retrieved from https://youtu.be/OyG0vhdjGy4
- "【一般販売6/8~】『INNK EXHiBiTiON』#イノナカ". PassMarket
- suisei_hosimati (2019, November 29) 💫いつも応援して下さる皆様へ💫 [Tweet] Retrieved from https://twitter.com/suisei_hosimati/status/1200286537750962178
- suisei_hosimati (2019, December 1) 🌟配信情報🌟 12月1日 🕗20:00〜 ……おや！？ すいせいの ようすが……！【新衣装&メイクお披露目】 遂にこの時がやってきました！！！！ すいちゃんのかわいいかわいい新しい姿をお披露目しちゃいます！！！！✨ 🔽今日のライブ会場🔽 https://youtu.be/EkBM9U51RSs #ほしまちすたじお [Tweet] Retrieved from https://twitter.com/suisei_hosimati/status/1201080938999889922
- Hoshimachi, S. [Suisei Channel] (2019, December 1) 【新衣装&メイクお披露目】……おや！？ すいせいの ようすが……！【ホロライブ/星街すいせい】 [Video File] Retrieved from https://youtu.be/EkBM9U51RSs?t=513
- ホロライブ所属VTuber「星街すいせい」新Live2Dモデルお披露目放送と転籍のお知らせ. Retrieved from https://prtimes.jp/main/html/rd/p/000000176.000030268.html
- suisei_hosimati (2020, January 2) 🌟配信情報🌟 1月2日 🕙17:30〜 新年一発目!!あけましておめでとう!【新衣装お披露目】 ホロライブお正月新衣装リレー2日目！ 新年から一味違ったすいちゃんをお披露目しちゃうぞ！✿ 🔽今日のライブ会場🔽 https://youtu.be/ROTiWfRVIQQ #ホロライブ正月衣装 [Tweet] Retrieved from https://twitter.com/suisei_hosimati/status/1212635773117140992
- Hoshimachi, S. [Suisei Channel] 【新衣装お披露目】新年一発目!!あけましておめでとう!【#ホロライブ正月衣装 / 星街すいせい】[Video File] Retrieved from https://youtu.be/ROTiWfRVIQQ?t=955
- hololivetv (2020, January 19) 【今日20:00〜】 1/24 #とまらないホロライブ に向けて… ホロライブ公式YouTube Channelで 「ライブを100倍楽しむための放送！」決定！ #宝鐘マリン #星街すいせい #不知火フレア の3名が参加！ 放送はこちらから→ https://youtube.com/watch?v=r2oP_aINtQg… ▼ニコ生視聴チケット発売中！ https://secure.live.nicovideo.jp/event/nonstop_hololive [Tweet] Retrieved from https://twitter.com/hololivetv/status/1219094697488064512
- hololive_En (2019, January 20) [8PM today] 1/24 #NonstopHololive is soon!✨ "Stream to enjoy the live 100 times more!" on the hololive Official YouTube Channel! #HoushouMarine #HoshimachiSuisei #ShiranuiFlare will be there! Link→ https://youtube.com/watch?v=r2oP_aINtQg ▼ niconico tickets on sale! https://secure.live.nicovideo.jp/event/nonstop_hololive [Tweet] Retrieved from https://twitter.com/hololive_En/status/1219154227043291138
- [hololive ホロライブ - VTuber Group] (2020, January 20) 【 #ノンストップストーリー 】ライブを100倍楽しむための放送！【 #とまらないホロライブ 】[Video File] Retrieved from https://youtu.be/r2oP_aINtQg?t=3383
- hololive_En (2020, January 24) [Songs Performed!] 🎵 This is the Happiness and Peace of Mind Committee (Inugami Korone) 🎵 13 (Uruha Rushia) 🎵 Tenkyuu, Suisei wa Yoru wo Matagu de (Hoshimachi Suisei) #とまらないホロライブ [Tweet] Retrieved from https://twitter.com/hololive_En/status/1220660007030513665/photo/3
- hololive_En (2020, January 24) [Songs Performed!] 🎵 Dream☆Story (Sora, Roboco, Miko, AZKi, Suisei) 🎵 Yumemiru Sora e (1st Gen) 🎵 Go-toubun no Kimochi (2nd Gen) #とまらないホロライブ Photo By Ayo Kajino [Tweet] Retrieved from https://twitter.com/hololive_En/status/1220676990061010946/photo/1
- suisei_hosimati (2020, February 25) ⚠重大告知⚠ #星街すいせい #ほしまちすたじお [Tweet] Retrieved from https://twitter.com/suisei_hosimati/status/1232297804493541376
- suisei_hosimati (2020, February 25) ‼ 3 D お 披 露 目 日 程 決 定 ‼ 3月1日 21時～ Suisei Channel にて！！ やっとお披露目できるよおおおおおおお 絶対みんなを満足させるようなお披露目にさせます！！ 絶対に見に来てください！！！ #星街すいせい #ほしまちすたじお [Tweet] Retrieved from https://twitter.com/suisei_hosimati/status/1232298326176874497
- Hoshimachi, S. [Suisei Channel] (2020, March 1) 【#星街すいせい3D】全編ライブ！歌って踊る姿を見てください！✨【ホロライブ / 星街すいせい】[Video File] Retrieved from https://youtu.be/FZnG1t34wCs
- hololivetv (2020, November 10) 【🎉お知らせ🎉】 「#星街すいせい」「#不知火フレア」の新衣装お披露目配信が決定いたしました‼ 🔽詳細はコチラ🔽 https://prtimes.jp/main/html/rd/p/000000316.000030268.html #ホロライブ [Tweet] Retrieved from https://twitter.com/hololivetv/status/1326088393642553346
- Hoshimachi, S. [Suisei Channel] (2020, November 12) 【お披露目+歌】遂にきた‼#星街すいせい新衣装 だぞーーー!!【ホロライブ / 星街すいせい】[Video File] Retrieved from https://youtu.be/h9DYLHv4rKs
- Hoshimachi, S. [Suisei Channel] (2021, January 16) 【70万人耐久歌枠】リベンジかねて！歌います！【ホロライブ / 星街すいせい】[Video File] Retrieved from https://youtu.be/WLyEZicwOtA?t=6297
- Hoshimachi, S. [Suisei Channel] (2021, January 31) 【初配信✨】ホロライブSP(スペース)00期生です！☄【ホロライブ / 星街すいせい】[Video File] Retrieved from https://youtu.be/7KTDR2frhLk
- suisei_hosimati (2021, February 26) 収益化復活してる！！！！嘘！？！？！？嘘じゃない！？！？！？まじーーーーー！？！？！？😭😭😭✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨ [Tweet] Retrieved from https://twitter.com/suisei_hosimati/status/1365182099012026369
- [Aburage115] (2020, August 8) The Story of Hoshimachi Suisei [Video File] Retrieved from https://youtu.be/LZ87zuPkqMs
- [ねえええCABI] [2020, Feburary 20] Suisei was turned down once by Hololive [Video File] Retrieved from https://youtu.be/Tv8zKTcXGwU
- [Aburage115] (2020, March 23) Suisei almost broke her heart in these 2 years [Video File] Retrieved from https://youtu.be/F2Xs3KZIbVM
- Hoshimachi, S. [Suisei Channel] (2021, January 11)【#ホロお正月CUP】目指せ優勝！！！【ホロライブ / 星街すいせい】[Video File] Retrieved from https://youtu.be/A7k0vVogPbE?t=7134