Indie Author · Adult Cyberpunk Thriller

Stories from the dark.

Worlds of neon and scars. Stories about identity, control, and the fight to remain human in the face of the inhuman.

Obsidian – Shadow of Los Muertos, book cover by Mina Yamamura

Current project · In development

01 / Current Book

Obsidian

Shadow of
Los Muertos

He is a weapon without a past.
She is the only one who can read him.

Los Muertos, 2156. Escaped supersoldier Rhyzar Vyndral carries only a codename and fragments of a life that was taken from him. When the hacker Thia crosses his path, she becomes the key to his memories—and to exposing a project designed to turn human beings into controllable weapons.

As Aleron Industries erases its tracks, they are hunted through the depths of the megacity. Rhyzar must discover whether his choices are truly his own—before the program inside his mind takes control again.

Adult 18+Cyberpunk ThrillerBiopunk HorrorIn Development
02 / The Pulse of the Story

When the system breaks you,
you build a new home.

01

Biopunk Horror

Bodies become property, memories become tools, and human beings become experiments.

02

Cyberpunk Dystopia

Los Muertos, 2156: neon, corporate power, and a city where every truth has a price.

03

Psychological Darkness

Lost identity, manipulation, and the question of what remains human when everything else has been overwritten.

No heroes without fractures.
No truth without a price.

— The promise of Obsidian
MY – Mina Yamamura
03 / The Author

Mina Yamamura

An indie author of dystopian futures, psychological darkness, and urban magic.

Mina Yamamura writes adult cyberpunk thrillers with biopunk horror and dark psychological themes. Her stories center on damaged characters, conflicting loyalties, fractured identity, and resistance against systems determined to control human lives.

Obsidian – Shadow of Los Muertos is the beginning. Future projects will expand into urban fantasy and other dark worlds.

Mina Yamamura
04 / Content Notes

Dark themes.
Told with intent.

Obsidian is intended for an adult audience. Please read these notes before the book and decide whether the included themes are right for you.

01

Violence and Injuries

  • Detailed descriptions of physical injuries and pain.
  • Scenes featuring bloody wounds, scars, and signs of torture.
02

Trauma and Amnesia

  • Severe emotional and psychological trauma.
  • Amnesia and fragmented memories connected to violence and experimentation.
03

Experimental Cruelty

  • References to and descriptions of cruel human experimentation.
  • Psychological and physical torture.
04

Death and Loss

  • Deaths, some of them violent.
  • Loss and its psychological consequences.
05

Persecution and Paranoia

  • An intense sense of threat and pursuit by hostile actors.
  • Depictions of fear and escape.
06

Loneliness and Inner Conflict

  • Isolation and self-doubt.
  • Internal struggles with self-worth and identity.
07

Psychological Distress and Distrust

  • Detailed insight into characters under extreme mental strain.
  • Distrust and difficulty trusting others.
08

Sexual Content

  • Sexual acts and intimacy.
  • Consensual but intense sexual encounters.
09

Extreme Sexual Violence

  • Descriptions of or references to sexual violence.
  • Scenes that may be psychologically and emotionally distressing.

These notes identify themes and forms of depiction without revealing individual scenes.

Transmission channel open

Stay close to
the dark.

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