Creator’s Letter Vol.2

Yunyun Syndrome!? Rhythm Psychosis has announced that, along with the updated demo, the game is now scheduled for release in April 2026.

We originally announced a “winter release,” and we sincerely apologize for keeping you waiting a little longer.

However, we’ve been powering up the denpa all the more in the meantime.

Our whole development team will continue working hard, so we would be grateful if you could support us until the cherry blossoms bloom.

■ Creator’s Letter

Hello.

This is Fuyuki Hayashi, also known as WHO YOU.

I am the producer, director, and scenario writer for this title.

Following the previous Creator’s Letter, we would like to once again write a message to you.

The recently released demo has now surpassed 150,000 downloads,

and the game's wishlist is approaching 300,000.

Originally, we were thinking “If we reach 100,000 wishlists, that’ll be a gold star for us!”

So receiving this level of response has the whole team thrilled and deeply grateful every day.

This project is rooted in the spirit of:

“A doujin mindset—creating what we love, the way we love it.”

Because of that, every reaction we receive makes us feel

“There are people out there who love the same things we do,”

and it fills us with joy to see those shared feelings connect over the radio waves.

The project began when WSS Playground took a liking to the original proposal and prototype and joined us in development.

Later, in 2025, the publishing duties were officially transferred to Alliance Arts.

(The transition happened for reasons such as WSS Playground’s small-team structure, but they still support us as part of our early connections—for example, reposting on social media and showcasing our trailer on YouTube. We are truly grateful)

Right now, we are working hard to meet everyone’s expectations,

implementing adjustments and improvements based on the feedback we’ve received.

With this updated demo, we added a new difficulty mode,

and we are progressing on a wide range of updates, including unreleased music tracks.

We are committed to delivering even better denpa, and we apologize for taking additional time.

There have been twists and turns, but after this journey, we can finally say that Yunyun Syndrome!? Rhythm Psychosis is on track to reach you in April 2026.

It is because you are receiving our denpa—

because you are waiting for this game with excitement—

that the denpa of this project grows stronger, allowing us to polish the game into something even better.

Once again, from the bottom of my heart: thank you for tuning in.

We have many announcements planned as we head toward release.

We promise to deliver some truly wonderful denpa.

Thank you once again for your continued support of

“Yunyun Syndrome!? Rhythm Psychosis.”