Planned Release Date: July 2026

About This Game

The Kuon Island Nursery Rhyme Murders: Case Notes is a mystery deduction visual novel.

It contains the following elements.

A storm-lashed island.

A nursery rhyme that foretells death.

Seven prodigies.

Serial murders.

Modern locked-room mysteries.

Classic locked-room mysteries.

Astrology.

A jigsaw of flesh and blood.

A survivor.

And one lie told only so you would see this story.

And so, the story becomes the most familiar kind of mystery: people trapped in a sealed-off place, dying one after another.

For now, dear reader, that is all you need to believe. Begin this story with that assumption in mind.

Until we meet again within the story.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

After I personally finalized the design phase, some art assets were first rendered using generative AI tools, and I then manually refined and detailed them.
Similarly, certain background music pieces were developed with the help of generative AI tools.

Should you have any concerns about these methods, please feel free to experience the game according to your own preferences. Thank you for your understanding and consideration.

Mature Content Description

The developers describe the content like this:

This game contains depictions of murder, corpses, blood, physical injury, and related content. These elements are primarily used to support the mystery narrative and atmosphere, and are presented in a relatively restrained manner. The game does not focus on realistic or excessive gore. Players who are sensitive to such content should exercise caution.