From the back of the book:
Eight of the nine assassins who killed your master and murdered your family are now dead, justice having been served by a team of Rōnin who have sought vengeance over these last fifteen years. You are now the only survivor of that group of hunters, with one last assassin to track down and kill. Will you succeed in restoring your honour, or will events instead GO SOUTH?
This book contains an interactive short story where the reader makes the decisions for the main character. It is written in straightforward prose for older teens and adults who struggle with reading and places the reader straight into the action where their choices determine who lives and who dies. This volume is designed to be as portable as possible; an alternative to having a phone stuck to your face while travelling or sitting quietly at home. It doesn't require any dice, pencils or erasers to play; you only need the book.