Sayaka Tomaru, Momoha Takatsuru, and Shiori Ikemoto play three sisters in a live-action adventure experienced from the perspective of a pet hamster.
Kodansha will release the live-action romance simulation game Hamukoi: Sweet Days as a Hamster Reborn With Three Sisters, created through a collaboration between Kodansha Game Lab and the editorial department of the weekly photo magazine FRIDAY, on Steam in July 2026.
The game will also take part in Steam Next Fest, to be held in June 2026.
1 / 5
In this live-action romance simulation game, the protagonist is reincarnated as a hamster, kept by three beautiful sisters who were childhood friends, and lavishly pampered in an immersive live-action setting.
The three sisters and heroines are played by gravure idols Sayaka Tomaru, Momoha Takatsuru, and Shiori Ikemoto. From inside a cage or from the palms of their hands, players will experience an exciting shared life with the sisters from a hamster’s perspective.
From left: Shiori Ikemoto, Momoha Takatsuru, and Sayaka Tomaru.
When it was first announced last year, the game quickly drew attention in Japan and overseas for its unusual concept. It was covered in articles in more than 10 countries, including by the major gaming and esports outlet Dexerto, and generated a global response as a “crazy Japanese live-action game.” In Japan, it was also featured on Noda Kuri no Yabou on Tokyo MX.
The Steam store page was temporarily removed, but the game is now on track for release.
Ahead of the full release in July 2026, Hamukoi will take part in Steam Next Fest, a limited-time event on the Steam store running from June 16 through June 23, Japan time. A demo allowing players to experience part of the game is planned for the event. Detailed dates and distribution information will be announced in stages through the official Hamukoi X account and other channels.
The photo weekly FRIDAY and Kodansha Game Lab have teamed up for this unusual project. New and old departments within Kodansha worked across organizational boundaries in pursuit of a new form of game. The beautiful and sexy world of FRIDAY, stepping beyond the pages of a print magazine, can be enjoyed in beautiful 4K video.
Lead writer Ken Shimomura has worked on hit titles including Chain Chronicle and Onmyoji. The game also includes puzzle-solving elements in its full-fledged story.
Born in 1996 and from Gunma Prefecture. A leading Japanese gravure idol who marked the 10th anniversary of her debut in 2024. She is also active in dramas, films, and variety shows. Her hobby is sauna bathing.
Born in 2003 and from Hokkaido. She began ballet at age two and studied abroad in Switzerland and Belgium. In 2022, she made her entertainment debut after appearing on a romance reality show. She is also active as a member of the idol group Kimi to Miru Sora. Her hobby is violin.
Born in 2002 and from Hyogo Prefecture. She was a finalist in Seikore ‘20, a gateway to stardom for actresses and talents. She is active as a member of the idol group Teratera. Her hobby is saxophone.
Kodansha Creators’ Lab is an R&D division established in June 2021 within Kodansha’s Fourth Business Headquarters.
Under the banner of “redefining editing,” it connects with creators in every genre and brings a wide variety of content to the world beyond the confines of books and magazines.
It consists of the following labs:
For the latest information on Kodansha Game Lab, see its X account.
Source: PR TIMES
Beppin-so and Hamukoi will hold a joint in-person event in Tokyo on July 18, alongside a Steam Summer Sale and a gameplay stream by Non Nagisa.
The release date for the live-action adventure game, in which players are reincarnated as a pet hamster and pampered by three beautiful sisters, is set for Friday, July 17. The secrets of the three sisters played by Sayaka Tomaru, Momoha Takatsuru, and Shiori Ikemoto are finally revealed.
Become the pet hamster of three sisters played by Sayaka Tomaru, Momoha Takatsuru, and Shiori Ikemoto, and be pampered in this one-of-a-kind adventure. Who will you ham-ham with?
