Live-action dating simulation game Sweet Hamster Days will launch for PC via Steam, Epic Games Store, and DLsite in July, Kodansha announced. It will support English, Japanese, Traditional Chinese, and Simplified Chinese language options. A demo will be available from June 15 to 22 as part of Steam Next Fest: June 2026 Edition.
Here is an overview of the game, via Kodansha:
■ About
Sweet Hamster Days is a live-action romance sim where you experience the sweet life of a pet hamster being spoiled rotten by its three gorgeous owners: cuddles, treats, naps, and all.
Watch the three sisters’ lives from a pet’s perspective and uncover their secrets and hidden worries. Even as a tiny hamsters, you could help solve some huge problems!
Become the perfect pet and you just might get rewarded with a special treat… teasing and cute 4K live-action bonus scenes!
Sweet Hamster Days will let you experience something you could never experience in real life!
■ Story
Kota was supposed to see the Shiratori sisters, his childhood friends, for the first time in six years, but fate had other plans. When he woke up…
He find he’d become a hamster.
The three sisters are now his owners! There’s Himari, the kind and reliable eldest one; Futaba, the straight-laced middle one who’s obsessed with health; and and Miyu, the sassy, tsundere 18-year-old third daughter.
Kota, or rather ‘Hamta,” his new name as a pet, was as confused by the situation as he was pleased with all the pampering.
However, he noticed something. The sisters didn’t seem to get along as well as they used to.
What happened during the past six years?
You’ll need to use your tiny paws and big heart as well as you can to uncover the truth and help bring them back together!
■ Characters
Himari Shiratori (Eldest Sister) (portrayed by Sayaka Tomaru)
“Aw, Hamta, my little angel. I couldn’t live without you.”
At work, she’s a talented and reliable consultant for a top-notch company.
At home, her main pastimes are lazying around and drinking… and sometimes, cosplaying with Hamta.
Futaba Shiratori (Middle Sister) (portrayed by Momoha Takatsuru)
“Now, be a good boy and then I’ll pet your head as much as you like.”
Currently job-hunting, she’s a college student the same age as Kota when he was a human. She’s the overly serious and diligent type who’s been dancing ballet since she was a child. However, there’s a side to her personality that she only shows at home…
Miyu Shiratori (Youngest Sister) (portrayed by Shiori Ikemoto)
“C’mon, Hamta. Bounce up like you always do!”
A cheeky high schooler who plays sax in the school band. She’s a very talented musician and praised as the best in her band, but lately, she seems a bit bothered by something.
Kota Kurono / Hamta
The protagonist. Right as he came back to his hometown and saw Futaba for the first time in six years, he got into a traffic incident and somehow got reincarnated into the Shiratori sisters’ pet hamster. Ironically, when he was a child, the sisters gave him the nickname “”Hamta”” because he was so small he kind of resembled a hamster.
■ The Development Team
This project is brought to you by a one-of-a-kind collaboration: the “FRIDAY” magazine by Kodansha’s, Japan’s most famous publisher, and Kodansha Game Creators Lab.
The beautiful (and titillating) world of FRIDAY leaps off the printed page and into stunning 4K live-action video.
The lead writer is Ken Shimomura, the pen behind hits like Chain Chronicle and Onmyoji. Enjoy this sweet story with a surprising touch of mystery!
■ Cast
- Sayaka Tomaru – Born 1996, Gunma Prefecture. She’s one of Japan’s top gravure idols, and she celebrated 10 years in this industry in 2024. She’s active in TV dramas, movies, and variety shows as well. Her hobby is going to the sauna.
- Momoha Takatsuru – Born 2003, Hokkaido. She started ballet at age 2 and eventually studied abroad in Switzerland and Belgium. She debuted in entertainment after appearing on a reality dating show in 2022. Her hobby is playing the violin.
- Shiori Ikemoto – Born 2002, Hyogo. She was a finalist in the 2020 edition of Seikore, a gateway contest for actresses and talents. She’s currently a member of the idol group “Teratera.” Her hobby is playing the saxophone.
(All characters and the actors playing them in this work are 18 years of age or older.)
Watch a new trailer below.
Release Window Trailer
English
Japanese
Traditional Chinese