Hoshimachi Suisei

Her YouTube activity consists primarily of live streaming herself singing karaoke, playing video games, talking to her fans, or collaborating with other talents. She is particularly well known among fans for her skill at Tetris and her singing ability. Outside of her streaming and musical activity, she has appeared on Japanese television and radio programs as a virtual personality. On 1 February 2025, she performed at the Nippon Budokan, fulfilling a career-long goal.

• Name — Hoshimachi Suisei • Native Name — 星街すいせい • Born — YYYY MM DD • Occupation — * Singer • VTuber • Years Active — 2018–present • Label — * Cover • Sony • Toy's Factory • Stellar • Mastersix • VIA • Current Member Of — * Hololive Idol Project • Midnight Grand Orchestra Hoshimachi Suisei is a Japanese singer, songwriter, and virtual YouTuber. She began posting videos as an independent creator in March 2018. In May 2019, she became affiliated with Hololive Production through their newly created music label, INoNaKa Music, before joining the agency's main branch later the same year. Her YouTube activity consists primarily of live streaming herself singing karaoke, playing video games, talking to her fans, or collaborating with other talents. She is particularly well known among fans for her skill at Tetris and her singing ability. As of September 2026, she has 2.91 million subscribers and 1.78 billion views on YouTube. As a singer, she has released three studio albums, as well as two extended plays under her side project Midnight Grand Orchestra with producer Taku Inoue, all of which have debuted within the top ten on the Oricon Albums Chart. Outside of her streaming and musical activity, she has appeared on Japanese television and radio programs as a virtual personality. On 1 February 2025, she performed at the Nippon Budokan, fulfilling a career-long goal.

Hoshimachi Suisei created her YouTube channel on 18 March 2018 and revealed her initial character design and model, illustrated and rigged by herself, on Twitter that same day. She posted her first video to YouTube on 22 March 2018, debuting as an independent virtual YouTuber and self-proclaimed idol. She joined the VTuber group S:gnal on 2 July 2018, but left a month later on 4 August. She released her first original song, "Comet", on 22 November 2018, and her second, "Her Trail on the Celestial Sphere", on 22 March 2019, both as YouTube music videos.

On 19 May 2019, Hoshimachi joined Hololive Productions via INoNaKa Music, its newly created music label, with VTuber AZKi. She announced on Twitter on 28 November 2019 that she would be transferring to the all-female Hololive agency. Cover Corp., Hololive's parent company, also officially announced the transfer on 29 November, to be carried out on 1 December. Hoshimachi also received a new Live2D model built by Live2D animator rariemonn based on an updated character design by Teshima Nari. In October 2019, Hoshimachi started live streaming on bilibili. After her 3D model's debut concert on 1 March 2020, her popularity on the site grew tremendously. This stream garnered over tens of thousands of live viewers on bilibili. On 17 March 2020, her number of jiànzhǎng (舰长, or "captains", viewers who donate over 198 renminbi to a particular streamer every month), surpassed 1,000, over 700 of whom joined during the aforementioned concert. She was the fourth streamer and first VTuber on the platform to reach that milestone. Hoshimachi performed in the "Hololive 1st fes. Nonstop Story" concert at the Toyosu PIT on 24 January 2020 with every member of Hololive at that time. She reached the 100,000 subscriber milestone on YouTube on 31 January 2020. On 1 March 2020, Hoshimachi debuted her 3D model, created by Yatsurugi. This stream was watched by 55,000 live viewers and its associated Twitter hashtag was at one point the top trending hashtag in the world. On 22 March 2020, Hoshimachi released her first single under Cover Corp., "Next Color Planet", which ranked 5th in the Oricon daily digital single ranking on the day of its release. Ghost On 13 April 2021, Hoshimachi released her next digital single "Ghost", which ranked 1st on Oricon daily digital single ranking, also reaching 1st on other digital single charts such as iTunes Japan, Amazon Music Japan, and Mora. "Ghost" also became the first VTuber-produced song to remain in Oricon's daily single ranking for two days in a row, reaching No. 4 on 15 April, as well as the first VTuber-produced song to chart in Oricon's weekly single ranking, reaching No. 11. The song also charted on Billboard Japan's weekly ranking of downloadable songs, reaching No. 5 for the week of 12 to 18 April. On 26 June 2021, Hoshimachi's YouTube channel reached 1 million subscribers. In the summer of 2021, Hoshimachi announced a series of three back-to-back monthly digital extended play releases, starting with "Bluerose / Comet" on 25 June. On 8 July, she released "Kakero / Tenkyū, Suisei wa Yoru o Mataide" On 21 August, she released "Jibun Katte Dazzling / Bye Bye Rainy", featuring a song which she had previously uploaded on 16 August as part of a collaboration with the rhythm game Chunithm. On 29 September 2021, Hoshimachi released her first album, Still Still Stellar, which she had announced in July that year. Her album charted 5th place on the Oricon Daily Album Ranking, becoming the best-ever performing solo VTuber album. On 21 October 2021, Hoshimachi performed her first paid concert, "STELLAR into the GALAXY", at Tokyo's Toyosu PIT with streaming on SPWN, featuring NIJISANJI VTuber Inui Toko and fellow Hololive member AZKi as guests. On 31 March 2022, Hoshimachi Suisei collaborated with the composer Taku Inoue to start the project Midnight Grand Orchestra under the label Toy's Factory. Their first single, "SOS", was released shortly on 13 April, along with an accompanying YouTube music video on the project's new channel. Midnight Grand Orchestra later announced its first album, featuring 7 songs, including "SOS", on 28 April of that year. It was released on 27 July 2022, and the group performed in a SPWN-streamed concert mixing virtual and real elements and featuring a live band on 20 August. On 20 January 2023, Hoshimachi appeared on the YouTube channel The First Take, becoming the first VTuber to perform on the popular channel. Her one-take version of "Stellar Stellar" quickly exceeded 5 million views and broke the channel's premiere live viewership record. On 25 January 2023, Hoshimachi's second full-length album, Specter, was released, after having been announced in November of the previous year, along with her second paid concert, "Shout in Crisis", which she performed live at Tokyo Garden Theatre, with streaming on SPWN and ZAIKO, on 28 January. On 27 September 2023, Hoshimachi's YouTube channel reached 2 million subscribers, become the fifth member of Hololive to do so. On 7 April 2024, the music video for Hoshimachi's new single "Bibbidiba" reached 10 million views, the fastest video to reach that view count for a VTuber. In November 2024, the music video surpassed 100 million views. On 3 September 2024, Hoshimachi announced her first live tour, "Spectra of Nova", occurring throughout fall and winter 2024 at Saitama Super Arena, Ookini Arena Maishima, and Fukuoka Sunpalace. She announced each concert would feature a different guest: Hoshimatic Project (a hololive VTuber idol unit organised by Hoshimachi herself) on 14 November at Saitama Super Arena, KAF on 10 December at Ookini Arena Maishima, and Shiranui Constructions (another hololive sub-unit Hoshimachi is a member of) on 28 December at Fukuoka Sunpalace. On 30 September 2024, Hoshimachi held the first-ever street performance by a VTuber on the streets of Udagawachō, Shibuya. On 8 October 2024, it was announced Hoshimachi would perform at the final day of Countdown Japan 24/25, alongside acts including Zutomayo and Sumika. On 11 October 2024, Hoshimachi announced that she would be appearing at YouTube Fanfest 2024 alongside acts including Hajime Syacho and Hikakin. On 1 February 2025, Hoshimachi achieved her dream of performing at the Nippon Budokan. She was named as one of Forbes Japan 's 30 under 30 that year.

During Suisei's eighth anniversary Youtube concert on 22 March 2026, she announced the establishment of her own personal agency Studio Stellar. The move included transferring all her solo activities including her music, streaming, fan club management, and new personal merchandise from Hololive Production to the new agency, while NERD Inc. would be responsible for Studio Stellar's talent management under a collaborative framework with Cover, who will continue to coordinate her activities as a Hololive Production talent. In a media event the next day, Hoshimachi clarified that Studio Stellar is a completely independent company, not attached to Hololive Production or Cover Corp. She also expressed her gratitude towards Cover taking her in at a time when no one else would and aims to continue sustaining her relationship with the agency, clarifying her plans to continue working as a Hololive Production talent and participate in product releases, live events and collaborations with her Hololive colleagues.

Hoshimachi's YouTube activity consists primarily of live streaming herself singing, playing video games, talking to her fans, or collaborating with other talents. Her work as a music artist includes performing in live concerts, singing and writing lyrics for her own singles and albums, and contributing as the singer for Midnight Grand Orchestra. Hoshimachi also appears on radio programs, including ones hosted by her, and television programs. Additionally, she has created illustrations for hers and other VTubers' channels, and has worked as a video editor for VTubers from Re:AcT and Hololive.

She has had her music appear and been represented by an in-game character in video games including Chunithm and The Idolmaster Cinderella Girls: Starlight Stage. On 5 May 2021, she collaborated with Mawaru Penguindrum for a simultaneous viewing. On 14 December 2021, she announced a merchandise collaboration with Converse Tokyo, releasing T-shirts and acrylic keychains. On 22 November 2022, it was announced she would be releasing the official series theme song for the game Dyschronia: Chronos Alternate, "7days", which was also featured on her album Still Still Stellar. In February 2024, her collaboration song with Honeyworks, "Kyoushitsu ni Ao", was used for a Google Pixel | au advertisement. In April 2023, Japanese supermarket franchise Ito-Yokado announced a collaboration with Hoshimachi, partnering with the talent to produce a at-home curry making kit. 90,000 units of the collaboration products were produced, and the inventory sold out within the first day of availability. In March 2026, Hoshimachi was announced to be part of a collaboration with Fortnite and was later released on 12 March, featuring her likeness as a playable skin and items associated with her.

On 5 April 2020, Hoshimachi became a radio personality with the advent of Hololive presents Hoshimachi Suisei's MUSIC SPACE, a weekly internet radio program for Cho A&G+ (超A&G+) of Nippon Cultural Broadcasting. Hoshimachi appeared on Encouraging Japan with Music!, another Nippon Cultural Broadcasting radio production, on 17 June 2020, and broadcast the first live studio performance by VTubers in Japanese radio history with Mokota Mememe and Hanabasami Kyō. On 4 April 2021, immediately after the end of MUSIC SPACE, Hoshimachi began a new radio program, Hoshimachi Suisei & Tadokoro Azusa's Parallel Scramble, with voice actress Azusa Tadokoro, also for Cho A&G+. Hoshimachi also appeared on other radio shows during and after the run of Parallel Scramble (which ended broadcasting after 1 October 2023), including SCHOOL OF LOCK! Music Line, and multiple appearances on VR! ~VTuber Music Radio~.

2020 • V-on! Sakura Music Live (19 March 2020, REALITY (Internet TV)) • Te Te TV (20 March 2020 BS Nippon) • NHK Virtual Bunkasai (14 August 2020, NHK) • D4DJ First Mix TV (2 and 9 October 2020, TOKYO MX, BS Nippon) • Numa ni Hamatte Kiitemita (7 December 2020, NHK Educational TV) 2021 • GARIBEN GIRL V (14 January 2021, TV Asahi) • Chōjin Joshi Sentai Garibengā V (14 January 2021,TV Asahi) • Project V (25 August 2021 and 23 February 2022, Nippon TV and SPWN (Internet TV)) • Oshisugite V (29 August 2021, SPWN (Internet TV)) 2022 • Hyada×Taiiku no One Room☆Music (13 August 2022, NHK Educational TV) • BUZZ RHYTHM 02 (20 August 2022, Nippon TV) • Project V (29 December 2022, TVer and hulu (Internet TV)) 2023 • Music-ru TV (13 February 2023, TV Asahi) • Entertainment! District ~The e-World that Television Doesn't Know~ (7 June 2023, RKB Mainichi Broadcasting) • THE MUSIC DAY 2023 (1 July 2023, Nippon TV) • Buzz Rhythm 02 (11 August 2023, Nippon TV) 2024 • New TV (9 January 2024, NHK General TV) • Music-ru TV (20 May 2023, TV Asahi) • THE MUSIC DAY 2024 (29 June 2024, NIPPON TV) • CDTV Live! Live (7 October 2024, TBS TV)

※ indicates appearance through live streaming.

• The Shitest Start (22 May 2019, Akihabara Entasu) • INNK EXHiBiTiON (9 May 2019, Akihabara Entasu)

• hololive 1st Fes. 「ノンストップ・ストーリー」 (24 January 2020, Toyosu PIT) • VTuber Oshaberi Fes (16 February 2020, 3331 Arts Chiyoda Taiikukan) • It's a Virtual Pop World! (3 July 2020, SPWN)※ • Virtual Unit Fes "VILLS" (19 July 2020, SPWN・bilibili)※ • Bilibili Macro Link 2020 (25 July 2020, bilibili)※ • BilibiliWorld 2020 (7–9 August 2020, Shanghai New International Expo Center) • Tokyo Tower Firework Festival XR: Cosmic Flower (東京タワー花火大会XR〜COSMIC FLOWER〜) (6 September 2020, YouTube/Niconico Douga/bilibili stream)※ • TOKYO IDOL FESTIVAL Online 2020 (4th day) (4 October 2020, live streamed via TOKYO IDOL FESTIVAL site)※ • SUISEI MUSIC "POWER" LIVE (22 November 2020, Nissin Power Station)※ • Inui Toko 1st Solo Live "who i am" (10 December 2020, KT Zepp Yokohama) • Hololive 2nd fes. Beyond the Stage (2nd day) (22 December 2020) – pay-per-view live stream on Niconico and SPWN, sponsored by Bushiroad※

• VILLS vol.2 (21 March 2021, SPWN)※ • V-Carnival (Day 1) (3 April 2021, SPWN)※ • TUBEOUT! Vol.10 (31 July 2021, SPWN)※ • Hoshimachi Suisei 1st Solo Live "STELLAR into the GALAXY" (21 October 2021, Toyosu PIT, SPWN) – co-sponsored by Bushiroad※

• Hololive 3rd fes. Link Your Wish (1st Day) (19 March 2022, Makuhari Event Hall, SPWN/Niconico) – co-sponsored by Weiß Schwarz and others※ • VTuber Fes Japan 2022 (2nd Day) (30 April 2022, Makuhari Messe, Niconico) ※ • V-Carnival vol.2 (2nd Day) (12 June 2022, eplus) ※ • Midnight Grand Orchestra 1st LIVE "OVERTURE" (20 August 2022, SPWN) ※

• Hoshimachi Suisei 2nd Solo Live "Shout in Crisis" (28 January 2023, Tokyo Garden Theater, SPWN/ZAIKO) ※ • Hololive 4th fes. Our Bright Parade (1st and 2nd Days) (18 & 19 March 2023, Makuhari Event Hall, SPWN) – sponsored by Bushiroad ※ • Hololive English 1st Concert – Connect the World – (2 July 2023, YouTube Theater, SPWN) – sponsored by Bushiroad (Guest appearance) ※ • Buzz Rhythm LIVE V 2023 (29 July 2023, SPWN) ※ • ASO ROCK FESTIVAL FIRE 2023 (30 September, Kumamoto Prefectural Outdoor Theater) • Weiss Schwarz 15th Anniversary Live (2 November 2023, Tokyo Garden Theater) • Hoshimachi Suisei @ NYC (17 November 2023, Jacob K. Javits Convention Center)

• Hololive 5th fes. Capture the Moment (2nd day) (17 March 2024, Makuhari Event Hall, SPWN) – sponsored by Bushiroad ※ • Hololive English 2nd Concert -Breaking Dimensions- (1st and 2nd days) (24 & 25 August 2024, Kings Theatre, eplus) (Guest appearance) ※ • Sakura Miko 1st Solo Live "flower fantasista!" (26 October 2024, Ariake Arena, SPWN) (Guest appearance) ※ • Hoshimachi Suisei Live Tour 2024 "Spectra of Nova" (14 November 10 December, and 28 December 2024 at Saitama Super Arena, Ookini Arean Maishima, and Fukuoka Sunpalace and on SPWN/ZAIKO) ※ • YouTube Fanfest Japan 2024 (11 December 2024, Makuhari Event Hall, YouTube) ※ • COUNTDOWN JAPAN 24/25 (4th day) (31 December 2024, Makuhari Messe)

• Hoshimachi Suisei Nippon Budokan Live "SuperNova" (2 February 2025, Nippon Budokan). • Shirakami Fubuki 1st Solo Live "FBKINGDOM ANTHEM" (13 February 2025, Pia Arena MM, SPWN/ZAIKO) (Guest appearance) ※ • Hololive 6th fes. Color Rise Harmony (1st and 2nd days) (8 & 9 March 2025, Makuhari Event Hall, SPWN) ※

• Hoshimachi Suisei Live "SuperNova: REBOOT" (21 February 2026, K-Arena Yokohama).

• Title — Album details — Peak chart positions — Sales • JPN — JPN Comb. — JPN Hot • Still Still Stellar — * Released: 29 September 2021 * Label: Cover Corp * Formats: CD, digital download, LP, streaming — 6 — 6 — 4 — * JPN: 30,882 • Specter — * Released: 25 January 2023 * Label: Cover Corp * Formats: CD, digital download, LP, streaming — 4 — 4 — 4 — * JPN: 55,400 • Shinsei Mokuroku (新星目録) — * Released: 22 January 2025 * Label: Cover Corp * Formats: CD, digital download, streaming — 3 — 2 — 12 — * JPN: 50,192

• Title — Album details • Scrap & Build! (with Shiranui Flare, Omaru Polka, Sakura Miko and Shirogane Noel as Shiranui Construction) — * Released: 8 June 2024 * Label: Cover Corp * Formats: Digital download, streaming

• Title — Year — Peak chart positions — Sales — Certifications — Album • JPN — JPN Comb. — JPN Dig. — JPN Hot — JPN DL • "Comet" — 2018 — — — — — 39 — — — 25 — Still Still Stellar • "Her Trail on the Celestial Sphere" — 2019 — — — — — 24 — — — 11 • "Next Color Planet" — 2020 — — — — — 37 — — — — • "Ghost" — 2021 — — — — — 11 — 100 — — — * JPN: 6,263 (digital) • "Bluerose" — — — — — 31 — — — 17 • Kakero — — — — — 25 — — — 13 • Sanji Juunifun (with Taku Inoue) — — — — — — — — — — — Aliens • Jibun Katte Dazzling — — — — — — — — — 12 — Still Still Stellar and Chunithm All Justice Collection Episode III 4 • "Bye Bye Rainy" — — — — — — — — — 25 — Still Still Stellar • "The Last Frontier" (with AZKi) — — — — — — — — — — — rowspan="2" Non-album singles • "Out of Frame" (with Inui Toko) — — — — — — — — — — • "Template" — 2022 — — — — — 7 — 97 — 4 — Specter • "Wicked" (featuring Mori Calliope) — — — — — 8 — — — 6 • "CapSule" (with Mori Calliope) — — — — — — — — — — — Shinigami Note • "Syakunetsu nite Junjō (Wii-Wii-Woo)" — — — — — 31 — — — 15 — * JPN: 2,543 (digital) — Specter • "My Happy Transmission" — — — — — 36 — — — 32 — * JPN: 1,984 (digital) • "Soirée" — — — — — 29 — — — 25 — * JPN: 2,766 (digital) • "Pathfinder" — 2023 — — — — — 20 — — — 7 — * JPN: 4,222 (digital) — Shinsei Mokuroku • "Sui-chan's Maintenance Song" — — — — — 11 — — — 8 — * JPN: 2,844 (digital) — Non-album single • "Xion" — — — — — 26 — — — 38 — Shinsei Mokuroku • "Bibbidiba" — 2024 — 15 — 21 — 5 — 19 — 5 — * JPN: 6,883 (physical) * JPN: 39,201 (digital) — * RIAJ: Platinum (st. Streaming) • "Jubilee" (with Kaede Takagaki as voiced by Saori Hayami) — — — — — — — — — — — The Idolmaster Cinderella Girls: Starlight Master Collaboration! - Jubilee • "Moonlight" — — — — — 8 — — — 7 — * JPN: 5,964 (digital) — Shinsei Mokuroku • "Awake" — — — — — 8 — — — 9 — * JPN: 5,452 (digital) • "Orbital Period" — 2025 — — — — — 11 — — — 14 — * JPN: 3,159 (digital) — rowspan="10" • "I Don't Care" — 5 — 45 — 1 — 29 — 1 — * JPN: 39,854 (digital) • "Bloom in the Night" — — — — — 3 — — — 3 — * JPN: 9,475 (digital) • "Suisei" — — — — — 13 — — — 13 • "Tsuki ni Mukatte Ute (Moonshot)" — 2026 — 3 — 21 — 13 — 59 — 13 — * JPN: 12,255 (physical) * JPN: 2,994 (digital) • "Chatter Chatter" (with Houshou Marine) — — — — — 35 — — — 37 — * JPN: 1,115 (digital) • "Primadonna" — — — — — 12 — — — 13 — * JPN: 3,203 (digital) • "Going My Way" (with AZKi) — — — — — 14 — — — 19 — * JPN: 1,544 (digital) • "The Stargazing Girl" — — — — — 14 — — — 16 — * JPN: 2,183 (digital) • "Gum & Drop" — — — — — 5 — — — 5 — * JPN: 2,518 (digital) • "—" denotes a recording that did not chart.

• Title — Year — Peak chart positions — Album • JPN — JPN DL • "Prism Melody" (with Oozora Subaru, Momosuzu Nene, Minato Aqua. Tsunomaki Watame, Yozora Mel, Nekomata Okayu, Aki Rosenthal, Tokoyami Towa, and Usada Pekora as Hololive Idol Project) — 2022 — — — — • "Tonde K! Hololive Summer" (with Hololive Idol Project) — — — 37 — Hololive Summer 2022 • "Sparklers" (with Aki Rosenthal, Ookami Mio, Shishiro Botan, Nakiri Ayame, Kazama Iroha, Shirogane Noel, and Himemori Luna as Hololive Idol Project) — — — — • "Story Time" (with AZKi, Moona Hoshinova and Irys as Star Flower) — — — — — rowspan="2" Non-album singles • "Seishun Archive" (with Tokino Sora, Shirakami Fubuki, Minato Aqua, Amane Kanata, Moona Hoshinova, Airani Iofifteen, Takanashi Kiara, and Gawr Gura as Hololive Idol Project) — 2023 — — — 37 • "Nakamaka" (with Shiranui Flare, Omaru Polka, Sakura Miko and Shirogane Noel as Shiranui Construction) — — — — — Scrap & Build • "Sugar Rush" (with Sakura Miko as MiComet) — — — — — rowspan="5" • "Can You Do the Hololive? (Hololive Super Expo 2024 Version)" (with Hololive Idol Project) — 2024 — — — — • "Get the Crown" (with Tokino Sora, Natsuiro Matsuri, Aki Rosenthal, Momosuzu Nene, Hakui Koyori, Oozora Subaru, Tokoyami Towa, and Kazama Iroha as Hoshimatic Project) — — — 36 • "Lollipop" (with Sakura Miko as MiComet) — 2025 — — — — • "Beep Beep" (with Tokino Sora, Natsuiro Matsuri, Aki Rosenthal, Momosuzu Nene, Hakui Koyori, Oozora Subaru, Tokoyami Towa, and Kazama Iroha as Hoshimatic Project) — 2026 — 18 — — • "—" denotes a recording that did not chart.

• Title — Year — Peak chart positions — Sales — Album • JPN Dig. • "Stellar Stellar – From the First Take" — 2022 — 22 — * JPN: 2,179 (digital) — rowspan="3" • "Michizure – From the First Take" — 39 — * JPN: 1,259 (digital) • "Polar" (with Rikka featuring Asumi Sena, Gabu Rieru, Takane Lui, Fuji Aoi, Matsunaga Iori, Minase, Ireisu Yusuke, and Ryushen) — 2024 — — • "Stellar Stellar" (with Rin Shibuya as voiced by Ayaka Fukuhara) — — — The Idolmaster Cinderella Girls: Starlight Master Collaboration! - Jubilee • Mō Dō Natte mo Ii ya - Movie edition — 2025 — 9 — * JPN: 9,779 (digital) • "—" denotes a recording that did not chart.

• Title — Year — Peak chart positions — Album • JPN Dig. — JPN DL • "Stellar Stellar" — 2021 — 48 — 33 — Still Still Stellar • "Michizure" — 2023 — — — 67 — Specter • "Kyōshitsu ni Ao" — 2024 — — — 82 — Holohoneygaoka High School -Originals- • "Golden Time Lover" — — — 59 — Everyone's Sukima Switch • "Venus Bug" — 2025 — — — 75 — Shinsei Mokuroku • "Caramel Pain" — — — 94 • "—" denotes a recording that did not chart.