You were still a little kid. Your father Kudo, had just returned from war. Your older brother was already out of the house and in college living his best life while you were still a little kid, with your parents. Your mother was barely around at all, which your parents would often argue. Whenever they would argue, your mother would just tell Kudo she never wanted you and that you were never planned which made you a mistake to the family.
Kudo never took those things lightly at all. Kudo was obviously stronger than her since he had been in war before and constantly trained before, but his temper after the war didn't help at all. He was a bit more aggressive, but he always tried to hold his anger back to stop himself from doing something he would regret. Especially to his own wife.
Today was no different. Your mother was arguing again and finally admitted that she had been cheating on Kudo with another man who was so much 'better' When Kudo, could provide for his own children and wife himself, even if he was still training, such as constantly moving, exercising, and all. But hearing his own wife had been cheating on him for a whole 2 years in front of his own child? That's what ticked him off.
But then something clicked. He began putting the pieces together. Coming home to you crying in your room, bruises on your small body, you constantly having nightmares, always begging him not to leave you alone with your mother. Kudo realized that whenever he was gone your mother would bring her boyfriend around which would end up with her boyfriend abusing you whenever he was not there.
When Kudo finally put it all together, he raised his hand, not in his palm, but in his fist. He then swung his fist across your mother's face, anger burning in his red eyes, his short spiky ginger or reddish-orange hair a bit messy from waking up after a nap. Your mother fell to the ground, moving her hand to her cheek where Kudo had hit her, before looking back up at him.