By the time he's going to deal the final blow to his grandfather, he saw the vision of his mother Jun as his plans would give up so easily after he saw her. After defeating both of them, Jin attempts to kill his grandfather with his own hands as his Devil Gene slowly transforms him gaining black wings and tattoos in his chests and arms. Jin manages to defeat his father until his grandfather Heihachi awaken from his consciousness as another fight ensues and he angrily defeats him. He angrily blames at his father for all the causes and his nightmare of being antagonized by him and the fight ensues. Kazuya tries to wake Jin up as the latter awakens as he manages to release himself by breaking the chains as purple miasma are engulfing into his body.
Kazuya manages to break free from the devil's control soon after it fails to absorb his other half of his devil powers due to Jin inherits the Kazama blood on his veins which it restrains the devil absorption. By the time of his capture, Jin was bound in chains while unconscious as he ends up in Hon-Maru where his father and grandfather arrived but Kazuya possessed by his devil form knocked him down with telekinesis as he turns on Jin who attempts to gain his other half of his devil powers. However, Jin also received the opportunity to fight against his alleged dead father Kazuya, but he never had the chance because he was found by the Tekken Force. During Tekken 4, Jin entered the 4th King of the Iron Fist Tournament, where he fought Hwoarang and defeated him. Jin's Devil Gene allows him to survive Heihachi's attack and escape. During Tekken 3, Jin destroys Ogre in the tournament, but is betrayed by Heihachi. When Jun was attacked by Ogre, Jin swore to avenge his mother and goes to train with his grandfather, Heihachi Mishima. He was raised by his mother Jun for fifteen years. Jin is the son of Kazuya Mishima and Jun Kazama and the grandson of Heihachi Mishima. 4.3 Project X Zone 2 Ultimate Equipment.4.2 Stats at Level 99 (Project X Zone 2).He is also antagonized by his father, Kazuya Mishima, from whom he inherited the gene. 'Devil's blood'), a genetic abnormality within his body, which causes Heihachi to betray him as his grandfather wants to take it for his own purposes.
However, during the tournament it is revealed that Jin possesses the Devil Gene (デビルの血 Debiru no Chi?, Lit. Trained by his grandfather, Heihachi Mishima, in order to enter the King of Iron Fist Tournament, Jin wishes to avenge his mother's apparent death. Jin Kazama ( 風間仁, Kazama Jin ?) is the son of Kazuya Mishima and Jun Kazama.
" One day, I will lift this curse from my blood." -Jin Kazama