Takumi Usui

Takumi Usui (碓氷 拓海) is Teikonian business magnate who is the currently serving as the chairman of Usui Industries, the largest private corporation in the country. In 2015, he was the richest man in Teiko with a net worth of US$25.6 billion. Currently, Onodera estimates Tamaki's net worth at US$10.0 billion, making him the tenth richest man in the country.