Heihachi begins to tire and lose his breath. With little choice left, Heihachi Mishima and Kazuya Mishima, father and son, form an unlikely alliance and together battle wave upon wave of Jacks, but reinforcements appear as fast as each Jack robot is disabled. 'Who sent you?! Why are you here?!' yells Heihachi as the first wave of Jacks approaches. At first, Heihachi suspected that Kazuya and his associates were responsible for the intrusion but realized that Kazuya was just as bewildered and stunned by the surprise attack. Unexpectedly, a group of 'Jack' robots crashed through the Hon-Maru ceiling. The roar of the aircraft increased and the sounds of something being ejected was heard in the distance. The silence was soon interrupted by what sounded like approaching aircraft. The sounds of battle gave way to an eerie silence as Heihachi lay spread out on the ground contemplating the events that had just transpired. 'Thank my mother, Jun Kazama, for your life.' Jin said, before taking flight through the Hon-maru ceiling and into the night sky. On the verge of taking the life of his grandfather, Heihachi, Jin manages to momentarily regain control of himself. Heihachi, completely overwhelmed by Jin's inhuman strength and now defeated, can only prepare himself for his imminent death. Jin's black wings spread, Devil markings surface on his upper body.

Utterly consumed with the memory of Heihachi's vile betrayal 2 years early, Jin begins to manifest the Devil Blood he inherited from his father, Kazuya. 'What a pathetic wretch.You worthless coward!' So began the fated battle between Heihachi and Jin. The eldest Mishima, Heihachi, enters the Hon-maru only to immediately gaze upon the unconscious body of his estranged and now defeated son, Kazuya. Driven by a unflinching hate and resentment to destroy the father he has never known, Jin Kazama emerged as the victor. After the conclusion of The King of Iron Fist Tournament 4, an intense battle between father and son, Kazuya Mishima and Jin Kazama, took place at Hon-maru, located deep within the Mishima estate.

Heihachi tekken 5