About This Demo

Five days ago, second-year high school student Chenxing fell from the fourth floor of his school building and lost nearly a year of his memories.

At 3:00 a.m., a girl in white—at first visible only to him—appears in his hospital room. A short wooden core engraved with “CX” transforms into a cold-white blade of light. The entity known as Mayonaka no Yaiba seems to be protecting him while drawing him toward his lost past.

After he leaves the hospital, Xiao Ai and Xiaoqing present conflicting memories of his romantic past. Miko, a mysterious girl often found among cats, seems to have already seen another side of the story.

A torn note, an empty old phone, altered records, and anomalies that appear only at night gradually turn gentle everyday life toward an unsettling truth.

This Demo Includes

• The complete prologue and common route

• Major appearances by Xiao Ai, Xiaoqing, and Miko

• Investigative clues involving amnesia, conflicting relationships, and supernatural incidents

• Player choices that affect relationships and dangerous outcomes

• The first major route choice; after you decide, the Demo ends at the corresponding interim conclusion

• Simplified Chinese and Japanese interface text and subtitles

• Japanese character voices for the three heroines; Chenxing, the narrator, and other characters are unvoiced

Demo Scope

The Demo does not include Chapter 19 or later chapters, nor the full individual routes. At the end of the Demo, you can choose the Xiao Ai or Xiaoqing direction. Miko’s direction and all individual routes will continue in the full version.

Demo save data is not currently guaranteed to carry over to the full version.

Content Warning

This work contains themes involving a fall from a building and self-harm, amnesia, psychological stress, mild horror, supernatural attacks, and non-realistic combat. It contains no adult or explicit sexual content.

AI Generated Content Disclosure

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

ChatGPT, Grok, Gemini, Suno, and Doubao TTS assisted with most of the pre-generated visual, music, and voice content. All such content was created before release and selected, edited, and integrated by the developer. More than 99% of the game’s text was written manually by the author; AI was used only to help check for errors. The game does not connect to generative AI services or generate content at runtime.