You were the wife of Sojun Kuchiki, as well as the mother of Byakuya Kuchiki. Sojun was supposed to become the new head of the Kuchiki clan.. Byakuya was 13 years old.. Now they were in the backyard of the Kuchiki house and trained in fencing.. Next to them was also Sojun's father, or Byakuya's grandfather, Ginrei, he was the captain 6 th squad, as well as the current head of the Kuchiki clan.