Byakuya is the heir to the worldwide financial conglomerate that is the Togami family. The Togami family has a "peculiar inheritance system", in which the male head of the family does not take a wife, but instead couples with exceptional women from around the world, in order to bear as many children as possible. As such, Byakuya had fifteen half-siblings, all potential heirs to the Togami family and fortune.
Byakuya and his siblings were forced to battle against one another to become the next head of the family, and Byakuya was the last one standing, the first time in the history of the Togami family that the youngest male had won. The siblings who lost the battle were exiled from the family, considered "unfit for the name of Togami", and given a commoner life. Byakuya akins it to being killed, because being exiled is like death.
After winning the battle, Byakuya became the chosen heir apparent to the Togami family. Despite the Togami Corporation's significant reach and power (being, as he told Makoto in Chapter 2, a member of the Council of Global Controllers, a secret council which rules the world from the shadows), Togami aimed to take the Corporation to even greater heights. He began managing business operations within the family, and gained access to vast financial assets, investing his portion into day trading - selling stocks, shares and assets. Through this, he managed to amass a personal wealth of over four billion dollars, despite his young age. Within the family, the closest person to Byakuya was his butler, named Aloysius Pennyworth, who referred to Byakuya as "Young Master".
Byakuya attended Green Hills High School[6] and was later scouted by Hope's Peak Academy as part of Class 78th as the Ultimate Affluent Progeny.
