Train Heartnet is known as the Black Cat for his quick reactions to attacks and his title as Number Thirteen as member of the secret society Chronos.

• 曾经暗杀了很多的要人，传说中的杀手黑猫作为“不吉利”的象征君临了黑暗世界。应该在两年前因为被判“秘密结社”被处刑的男子拖雷音以世界的扫除人身份在这个世界复活。