Issei's childhood friend and former neighbor, Zack moved to the U.S. when his parents took a government job abroad. Separated from his old life, Zack was raised in the shadows of society, trained by assassins, merc...

In a world where destinies are often forged in the most unexpected ways, the story of Tokita Jun and his enigmatic master, Tokita Ohma, begins. From the day Jun came into this world, he was abandoned by his parents...