Buso Renkin, Vol. 6

High school students heroic act turns into epic human vs. monster sword fight! 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! 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,