Kodansha Game Creators’ Lab and photo magazine FRIDAY have announced that the live-action romance sim Sweet Hamster Days, is finally releasing on July 17 on Steam after overcoming troubles with the platform.
Sweet Hamster Days (whose Japanese title roughly translates to “My Sweet Days with Three Sisters After Reincarnating as a Hamster”) follows Kota, a man who reincarnates as a hamster following an isekai anime-reminiscent traffic accident. As luck would have it, Kota becomes the new pet of the Shiratori sisters, his childhood friends. Now going by the name Hamta, Kota lives as a hamster as he interacts with the sisters, whose relationship has grown strained since he last saw them.
The Shiratori sisters – Himari, Futaba, and Miyu – are played by Japanese gravure idol Sayaka Tomaru, actress Momoka Takatsuru, and Shiori Ikemoto of idol group Tera Tera, respectively. While most of your time is spent napping, cuddling, and eating treats, your choices help uncover the secrets behind the girls’ troubles. Should you manage to make the sisters happy, you’ll be rewarded with “sexy and cute” 4K videos of them. The game is marked as containing “frequent nudity or sexual content,” so player discretion is advised.
Sweet Hamster Days was first announced in August 2025 with an October 2025 release date. However, the original Steam page would be taken down in October “due to various circumstances”, with the release postponed indefinitely. The page became available again in April 2026, with a revised July launch and a playable demo releasing the following month. With the July 17 release finalized, here’s to hoping that players will finally be able to live the life of a Casanova rodent.
Sweet Hamster Days is set to release on July 17 for Windows (Steam). A free demo is also available.
