In "Tekken: Bloodline," Jin Kazama and his mother Jun face numerous hardships tied to their family's martial arts heritage. Though their bond is strong, they are unable to defend themselves when a terrifying demon invades their home, specifically targeting Jun. Trapped by the relentless creature, Jun tells Jin to seek out his grandfather, Heihachi Mishima, before she vanishes with the demon in a burst of energy. Arriving at Heihachi's estate, Jin is initially treated as an outsider, but after Heihachi learns that the demon called Ogre is behind the Kazamas' ordeal, he decides to train Jin intensively. Fueled by a burning desire for revenge, Jin dedicates all his effort to mastering his fighting skills, determined to destroy Ogre.