Publisher Entergram has officially unveiled a new visual novel project titled Koyo -RE-Nium, centered on the Hololive VTuber Hakui Koyori. Beyond her role as the lead character, Koyori is also actively supervising the game's production. A teaser website is currently live, with a more comprehensive update promised for October 22.

To accompany the announcement, the studio released a key visual showcasing the VTuber in a game-exclusive school uniform. While specific plot details and platform availability remain under wraps, the project marks the fourth time Entergram has partnered with the Hololive brand for a dedicated game adaptation.

This title follows a history of similar character-focused projects from the publisher, including the Okayunyumu! series featuring Nekomata Okayu and the AQUARIUM visual novel starring Minato Aqua. Given the pattern of these previous releases, it remains to be seen if Koyo -RE-Nium will adopt a similar narrative structure or introduce new gameplay mechanics to the series' established formula.