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Kasukabe Tsumugi VX-β VOICEVOX | Songs Albums Notable Originals

Kasukabe Tsumugi (春日部つむぎ) is a prototype Japanese VOCALOID developed and distributed by the Yamaha Corporation in collaboration with KasukabeTsumugi Project and the Virtual YouTuber Kasukabe Tsukushi. She was released via a limited lottery application in September 2023 for the VOCALOID β-STUDIO VX-β engine. Previously, she received in November 2021 a Japanese talk voicebank for the VOICEVOX speech-synthesis software.[1]

Her voice is provided by the Japanese Virtual YouTuber Kasukabe Tsukushi (春日部つくし; Kasukabe Tsukushi) from Virtual Saitama (バーチャル埼玉; Bāchuaru Saitama). As a Virtual YouTuber, Tsukushi made her debut in February 2018 and was formerly part of company Activ8's in-house agency upd8 (which also managed Kizuna Ai before she got her own standalone company) before its cease of operations in December 2020.[2]


Kasukabe Tsumugi was created as the cousin of the Virtual YouTuber Kasukabe Tsukushi. She was born in the Saitama Prefecture like her cousin.




Kasukabe Tsumugi has a rather scruffy looking appearance. She has messy platinum blond hair tied in a single pigtail on her left. She loosely wears a light brown school jacket covered in pins and band aids which is somewhat draped under her left shoulder. The jacket also has a black with pink borders armband on her right side. She has a yellow scrunchie on her right wrist over her jacket. Her shirt is a dark grey dress shirt which is not tucked into her skirt and unbuttoned slightly at the top. She also has a slim and very loose golden tie with another band aid at the bottom. She has a dark pink plaid short skirt with a pinkish off-white border towards the bottom. She wears black dress shoes and white legwarmers that go up to her knees. Her nails are painted cyan and she wears a silver necklace. She also has light blue eyes.

For her VOCALOID β-STUDIO design, her jacket is taken off and tied around her waist, while the scrunchie is nowhere to be seen.


For more on VOCALOID relationships, see the FAQ.


Kasukabe Tsumugi
Kasukabe Tsumugi, a talking vocal.
Kasukabe Tsumugi β
Kasukabe Tsumugi β, a prototype AI singing vocal described as a bright and gentle voice.[3]

Music featuring Kasukabe Tsumugi[]

  • On this wiki, Kasukabe Tsumugi is featured in 1 songs , 0 albums .
Kasukabe Tsumugi Logo
Search for music featuring Kasukabe Tsumugi [show/hide]



Google Trends

Tsumugi Kasukabe Tsumugi


  1. https://twitter.com/KasukabeTsumugi/status/1462752800123748359
  2. @project_upd8 (2020, November 1) 2020年12月31日をもちまして、「upd8」を終了することとなりました。ファンの皆様方には多くの応援を賜りまして厚くお礼申し上げます。突然のお知らせとなり深くお詫びするとともに、今後もご参加バーチャルタレントの皆様は活動を継続いたしますので、変わらぬ応援を何卒よろしくお願いたします。[Tweet] Retrieved from https://twitter.com/project_upd8/status/1322780408883245056
  3. https://vocaloid.beta.yamaha.com/voicebank/

External links[]

Language Description Site
Japanese VOCALOID β-STUDIO product page for VOCALOID Kasukabe Tsumugi Link
Japanese 春日部つくし💿バーチャル埼玉県民 Official Twitter account for Virtual YouTuber Kasukabe Tsukushi Link
Japanese 春日部つくし The official YouTube channel for Virtual YouTuber Kasukabe Tsukushi Link
English deviantArt , art and media community Link
Japanese Pixiv , art and media community Link