Kazumi is the wife of Heihachi and at the begging of their relation, Heihachi had no idea of Kazumi’s’ devil gene, but she fears that one day she will lose control and expose her power to her husband. She is aware of how her husband would react if he knew of her power.
Kazumi and Heihachi has a son named Kazuya, a new addition to the family. But the problem is that after two years, Kazumi realizes that her husband is a different man. He is full of hate and anger and she could see that he is planning to do something evil, that he is looking to destroy the mission of this family and maybe even the world. And she is right. He is tired of the way the company is lead by his father Jinpachi, and he wants to take over to achieve his goals in life.
His company could give him the peace he is looking for if it’s conquested because it’s a type of military organization. Even if he has such plans, he still loves Kazumi and would not want anything to hurt her.
Kazumi hears of his plans to take over the organization and makes a plan with Jinpachi to stop him from destroying everything. But before the two of them realize, Heihachi has already taken the lead of the organization. Kazumi realizes that drastic measures need to be taken because she doesn’t want her son to be raised by such an evil man and she does not want to see the man she loves as a monster.
Kazumi fights Heihachi at the temple and he is amazed by her actions and decides to fight back.after being defeated, Kazumi turns into a devil and attacks once again. In order for him to never obtain the devil powers, Kazumi kills herself after the last battle.
A few years later, Heihachi realizes that his son has the same powers as his wife. There are some theories that Heihachi actually killed his wife, but everything is left to interpretation.
She is a beautiful character what seems to be wearing a traditional kimono, a light gray with red underlines and big white flowers. Her long black hair is tied into a traditional hair due. She also is a kind person and has inflicted the kindness into her son that will try to take his actions accordingly to his mother’s wish.