Entergram Teases Koyorinium Novel Game Starring Hololive's Koyori Hakui
Entergram's prior novel games starred Minato Aqua and Nekomata Okayu, so this adds a third Hololive VTuber to a lineup built on talent-led visual novels, with the TGS booth doing the early promotion while the game's platforms, date, and price stay unannounced.
Reporting from 1 source: Inside.
Entergram opened a teaser site on September 17 for Koyorinium, a novel game starring Hololive VTuber Koyori Hakui, who also supervises. Supported platforms, release date, price, and story are unannounced. Entergram is exhibiting at Tokyo Game Show 2026, held at Makuhari Messe from September 17 to 21, at booth Hall3 03-N05, with a key visual display, a signed standee, a message video from Hakui, and a sticker campaign tied to the hashtag #Koyorinium.
Entergram has not said what platform Koyorinium will run on, when it will ship, what it will cost, or what its story is. The teaser site is live, and the company says updates will go to its official website and its X account.
The Tokyo Game Show booth carries the promotion in the meantime. Visitors who photograph the key visual or the signed standee, post the image with #Koyorinium, and show the screen to staff get a key visual sticker, while supplies last each day.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.