Detective Kokoro: The Quantum Heart

By Rose Angel Publishing and Kit Indigo

In a future where human memory can be digitized, sold, and erased, Aiko Kokoro is a trainee detective still grieving the loss of her older brother, Hiro, who allegedly took his own life. But when the MoonCircuit-a quantum memory gem Hiro developed-resurfaces after being stolen from a secret lab, Aiko realizes her brother's death may have been staged.

Her investigation reveals a deeper conspiracy: the MoonCircuit is a gateway to The Mirror Garden, an underground archive of forbidden memory constructs. As she pieces together Hiro's neural diary entries-some fragmented, others corrupted-Aiko begins to relive his emotional spiral. Each recovered perspective (from AI logs to chat transcripts) brings her closer to the truth-and closer to a breakdown of her own.

To solve the mystery, Aiko must decode not just data, but the kokoro-the heart-of her brother, and confront the shadows of guilt, betrayal, and a society that would rather erase pain than face it.

• Format: Paperback
• Language: English
• ISBN: B0G6SCKWBX
• ISBN13: 9798278488897
• Release Date: February 2026
• Publisher: Independently Published
• Length: 290 Pages
• Weight: 0.86 lbs.
• Dimensions: 0.6" x 6.0" x 9.0"