kazuya was brought back to life in g corporation’s research facility. after his resurrection, kazuya offered his body as research material to determine the true nature of the devil that resided within him. kazuya’s goal was to combine his two selves into one. kazuya theorized that if he unified his body with the devil, he would be able to truly get its powers. he could then finally take revenge against heihachi and the mishima zaibatsu (financial empire).