Hololive VTuber Hakui Koyori to star in new game ‘Koyolinium’

Entergram has officially announced the development of ‘Koyolinium’, a new visual novel starring and supervised by Hololive VTuber Hakui Koyori. Koyori is a member of the ‘Secret Society holoX’ group under Cover Corporation.

While specific details regarding the release date, price, and supported platforms have not yet been disclosed, a teaser website has been launched. Further information is expected to be released when the official website goes live on October 22.

The project is being showcased at Tokyo Game Show 2026, where Entergram is exhibiting key visuals and a life-sized standee featuring Koyori’s autograph. The booth also features a special message video from the VTuber and a promotional campaign offering stickers to attendees who share photos of the exhibit on social media.