Koyorinium: Hakui Koyori Gets Her Own Novel Game

Entergram is developing a new novel game called "Koyorinium" in which Hololive VTuber Hakui Koyori takes the lead role while also participating in the project as a supervisor. The game was officially announced on September 17 at the start of the Tokyo Game Show 2026.

At this point, Entergram is holding back most of the details. Platforms, release date and price are not yet known. There are also no concrete details yet about the plot or other characters; further information is to follow in October.

At the Tokyo Game Show 2026, "Koyorinium" is already being shown at Entergram's booth. There, the company is displaying the key visual in large format as well as a standee signed by Koyori. In addition, a special video message from the VTuber is playing on site.

Entergram Continues Its VTuber Games

Working with a Hololive personality is not new territory for Entergram. The company has previously produced novel games with Minato Aqua and Nekomata Okayu. "Koyorinium" now continues this approach with Hakui Koyori, with her role explicitly going beyond appearing as the main character: she is personally supervising the project.

On aninew, Koyori was most recently the subject of the announcement of her first solo concert and second album. Other Hololive projects are also now directly featuring the talents as game characters, such as the recently released "Suba Pogo" with Oozora Subaru.

In parallel, Entergram is further expanding its series of games with a VTuber connection. Only a few days earlier, "Azure Memoria," another VTuber game from the publisher, was announced. Its release, platforms and genre have likewise not yet been fully specified.

For "Koyorinium," the next step in information is therefore already set: in October, the plot, setting and characters are to be presented in more detail. Until then, the announcement remains limited to Koyori's participation, the key visual and the presentation at the Tokyo Game Show.