Live-action romance simulation 'Hamkoi' to participate in 'SteamNext Fest' starting June 16! [Former big politician also 'This is dangerous' and surprised by 'brain-melting' game experience]

Kodansha Inc. announces that 'Hamkoi - My Sweet Days with the Three Sisters After I Reincarnated as a Hamster' will participate in the SteamNext Fest to be held from June 16 to 23, 2026. This work is a live-action romance simulation game born from a collaboration between Kodansha Game Lab and the photo weekly magazine FRIDAY editorial department, and the product version is scheduled for release in July 2026.

■ 'Observing the yoga of my childhood friend' 'Secret lesson with the female teacher' and other 'brain-melting experiences' await! A new sensation live-action romance sim from a hamster's perspective will participate in the SteamNext Fest!

This work is a live-action romance simulation game in which the protagonist, who has been reincarnated as a 'hamster,' lives with three beautiful sisters. In the currently distributed demo version, you can experience the immersive and stimulating experience a little earlier.

You can receive a 'secret lesson from the female teacher' by the cosplay-loving eldest daughter (Saya Kaede), sneak into the second daughter's (Momoha Takane) room and observe 'a little sexy yoga,' or have the third daughter (Shiori Ikemoto) in a maid outfit feed you strawberries with an 'ah~n'♡

To let more people experience the 'brain-melting experience,' we will also participate in the SteamNext Fest starting June 16. We will deliver healing to people all over the world.

From the right, Saya Kaede, Momoha Takane, Shiori Ikemoto Saya Kaede

Momoha Takane Shiori Ikemoto

■ Even a former big politician!! Continuous impressions of those who played the demo version

We have published articles on FRIDAY Digital with impressions from various people who have experienced 'Hamkoi.'

Shigenobu Ishihara

Former LDP Secretary-General Shigenobu Ishihara said, 'This is a bit dangerous. If there is such a realistic game, children will decrease even more,' and was surprised. 'I didn't know such a game existed, so I was surprised. To be honest, I don't want to be seen playing it!' he commented.

Unexpected 'Shigenobu Ishihara' challenges 'live-action romance game'! 'Former LDP Secretary-General's' thrilling 'Hamkoi' experience

Light novel writer Koga Kashiwagi, known for works such as the animated 'Life,' also experienced 'Hamkoi' in advance. Kashiwagi-san also participated in the scenario of this work. Regarding the third daughter who became a live-action image, he said, 'Basically, I like all situations, but the one I liked the most was the sleeping figure. It was a very good sleeping figure, and just watching it made my mental state fully recovered!' and shared his impressions.

'My mental state was fully recovered' Light novel 'Life' author Koga Kashiwagi experiences 'live-action romance game'!

In addition, articles with impressions from VTuber Taro Keiyaku, who is familiar with the underworld, and gravure idol Sasha Yurikawa, who has over 70,000 followers on X, are also published! We plan to publish articles on the experience of 'Hamkoi' by 'unexpected people' in the future.

'Why yakuza don't keep hamsters' The surprising reason? VTuber Taro Keiyaku with three prior convictions experiences 'Hamkoi'

'The female teacher's cosplay is the best' Gravure idol Sasha Yurikawa tries out the 'live-action romance game'

■ Wishlist registration campaign also decided to be held in conjunction with the demo version release!

A wishlist registration campaign is currently being held to commemorate the start of the 'Hamkoi' demo version distribution (until June 23, 23:59). By lottery, you can win limited edition check and Amazon gift cards from the three cast members. Please check the campaign details and apply enthusiastically!

■ Steam page reopening becomes a big topic in overseas media!

Although this work was hit by an accident where the Steam page was deleted last year, it was revived in April after correction. At that time, the bizarre concept and beautiful visuals attracted attention both domestically and internationally, and the topic of the 'crazy live-action game from Japan' was revived.

A special feature was also organized in Japan in 'Noda Kuri's Ambition ~ The Road to Game Unification ~' (Tokyo MX).

■ Advance play videos of the cast are also released!

Videos that followed the advance experience of 'Hamkoi' by Saya Kaede, Momoha Takane, and Shiori Ikemoto at the Tokyo Game Show last autumn are being released. The video becomes more enjoyable to watch after playing the demo version!

[About the cast]

Saya Kaede: Born in 1996, from Gunma Prefecture. A top gravure idol in Japan who welcomed her 10th anniversary since her debut in 2024. She is active in dramas, movies, and variety shows. Her hobby is sauna.

X:https://x.com/tmr_syk_

Instagram:https://www.instagram.com/tmrsyk

TikTok:https://www.tiktok.com/@tmrsyk

Momoha Takane: Born in 2003, from Hokkaido. She started ballet at the age of 2 and also studied in Switzerland and Belgium. In 2022, she made her entertainment debut through her appearance in a romantic reality show. She is also active as a member of the idol group 'Sora with You.' Her hobby is violin.

X:https://x.com/sweets_suki3

Instagram:https://www.instagram.com/momoha2003523

TikTok:https://www.tiktok.com/@sweets_suki3

Shiori Ikemoto: Born in 2002, from Hyogo Prefecture. A finalist in 'Seikore '20,' a gateway for actresses and talents. Her hobby is saxophone.

X:https://x.com/teratera_shiori

Instagram:https://www.instagram.com/shiori_ikemoto/

TikTok:https://www.tiktok.com/@teratera_shiori

[Product Information]

Title: 'Hamkoi - My Sweet Days with the Three Sisters After I Reincarnated as a Hamster'

Platform: Steam, Epic Games Store

Steam Store Page: https://store.steampowered.com/app/4390720/

Supported Languages: Japanese, English, Chinese (Simplified & Traditional)

Genre: Live-action romance simulation game

Release Date: July 2026

Price: Not yet determined

Number of Players: 1

Developer: Kodansha Inc.

Publisher: Kodansha Inc.

Production Cooperation: Tales & Co. Inc. / Qualia Writers Inc. / Production Exabilities Inc.

Copyright: ©Kodansha Ltd.

■ Kodansha Creators Lab (https://creatorslab.kodansha.co.jp/)

Kodansha Creators Lab is an R&D department established in June 2021 under the Fourth Business Headquarters of Kodansha Ltd.

Under the banner of 'Redefining Editing,' we engage with creators from all genres and deliver diverse content to the world that is not bound by the forms of books or magazines.

・Kodansha Game Lab, which supports indie game creators and plans new game development

・UGC Media Lab, which operates matching-type manga submission sites such as DAYS NEO

・Kodansha Cinema Lab, which supports independent video creators and conducts new video planning

・Genre

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