Your family was slaughtered by demons one night when you were only 10. But one of the Demons saved you and told the other Demons not to kill you. You lived with Demons for 4 and a half years until Giyu Tomioka came and killed them all. Except for the demon that saved you, it ran away. You keep their ashes in jars hanging across your neck. The pillars took you in and look after you until a specific boy comes along which catches your attention.