
Ken's mother Rukia Shihouin was a very powerful member of the clan. Not only was she married to the clan head for her good looks but also for her extreme prowess in the clan techniques. She ruled the clan along side her husband for many years. During this time the clan enjoyed a period of prosperity and strength amongst those of Konoha giving several strong ninja to the shinobi army of Konoha.
However shortly after she began to bear Ken his father passed away leaving her and Kens father as the current rulers of the clan. She continued to rule along side her father in law mostly ensuring that the future heir of the clan was being nurtured safely until the day he was born. When February 11th finally came Ken's mother went into labor and soon passed away giving birth to him. This left Ken in the car of his grandfather, the current clan head and only hope for Ken's eventual succession to the role.