Kazuki and Tokiko find themselves face to face with the legendary traitor of the Alchemist Warriors. The traitor, Victor, has a black kakugane for a heart, giving him the ability to drain energy from any humans in the area and increase his own strength. Then Kazuki discovers that he too has a black kakugane inside him. A fierce battle ensues, pitting the two owners of the rare black kakugane against one another!
- Chapter 46: Heart Shift
- Chapter 47: End of the Battle
- Chapter 48: A Warrior's Respite
- Chapter 49: A New Mission
- Chapter 50: Say It's Not So, Bravo.
- Chapter 51: Crimson Ocean
- Chapter 52: Re-Extermination Complete
- Chapter 53: When the Night Ends
- Chapter 54: One Heart and One Mind