Following months of digital platform uncertainty and a sudden storefront delisting, the highly anticipated live action romance simulation game Sweet Hamster Days is officially scheduled to release on July 17, 2026. The definitive launch window was announced by Japanese publishing giant Kodansha Game Creators Lab in partnership with the famous weekly photo magazine FRIDAY, locking down the game’s debut exclusively for PC via Valve’s digital marketplace.
Table Of Content
Key Information
- Title: Sweet Hamster Days
- Genre: Live Action Romance Simulation, Adventure, FMV (Full Motion Video)
- Developer and Publisher: FRIDAY / Kodansha Game Creators Lab
- Official Twitter Account: @kodanshagcl
- Target Platforms: Windows PC available on Steam and the Epic Games Store
- Supported Languages: English, Japanese, Simplified Chinese, Traditional Chinese
What Is the Story and Premise of Sweet Hamster Days?
The core narrative setup sounds like a parody of the popular anime subgenre known as isekai, where characters are transported to fantasy realms, but with a distinctly domestic twist. Players assume the role of Kota, a young man who gets involved in a serious traffic accident immediately after returning to his hometown. Instead of waking up as a powerful fantasy hero, he finds himself reincarnated as a tiny pet hamster.
Through sheer coincidence, he is adopted by the three Shiratori sisters, who happen to be his childhood friends whom he has not seen in six years. Renamed Hamta by the siblings, Kota must navigate his new existence inside a cage while discovering why the once close sisters have drifted apart during his absence.
Who Are the Real Life Cast Members and Writers?
Despite the humorous and absurd concept, the creative team handles the production with professional cinematic standards. The visual novel style story is penned by veteran writer Ken Shimomura, who is widely known for his narrative work on prominent gaming intellectual properties such as Sega’s mobile hit Chain Chronicle and NetEase’s popular RPG Onmyoji.
The three main heroines are brought to life by popular Japanese media personalities:
- Himari Shiratori: The reliable and professional eldest sister is portrayed by popular gravure model and television actress Sayaka Tomaru.
- Futaba Shiratori: The serious, ballet dancing middle sister is played by rising model and reality television personality Momoha Takatsuru.
- Miyu Shiratori: The sassy, musical youngest sister is brought to life by Shiori Ikemoto, a current member of the popular Japanese idol unit Tera Tera.
What Gameplay Features Are Included in the Full Version?
The title functions as an interactive movie running entirely in high fidelity 4K resolution live action video. Players influence the branching narrative paths through contextual choices made from the unique perspective of a pet rodent.
The primary gameplay loop involves exploring the household, interacting with each sibling to uncover hidden worries, and resolving their family conflicts. Succeeding in these social objectives rewards players with bonus scenes described by the developers as cute and revealing. Due to the frequent inclusion of adult content and revealing outfits, the official storefront lists a mature content warning for players.
Why Was Sweet Hamster Days Previously Removed From Steam?
The path to launch was highly unconventional for a major Kodansha publication. The game was initially revealed to the public in August 2025 with an expectation to debut in October of that same year. However, the store listing abruptly vanished from Valve’s servers right before the intended launch date without any official comment from the public relations team.
Industry analysts attribute the sudden postponement to Valve’s shifting policies regarding adult content evaluation and compliance guidelines. The digital store page quietly reappeared in April 2026, leading to a public demonstration phase during the Steam Next Fest event. Interested players can currently download the free Sweet Hamster Days Demo ahead of the final July launch.
This promotional preview showcases the initial introductory chapters and sets the stage for what looks to be one of the most eccentric visual novels of the summer season.
To view the gameplay style and see the main actresses in action, you can watch the Sweet Hamster Days Official Trailer which highlights the unique perspective of the game’s rodent protagonist.
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