Yoshio Ootori, Kyoya's father, is the patriarch of the Ootori family. Yoshio is portrayed as a cold, calculating father. Kyoya tries hard to please him in order to become heir of the family, despite the fact that his father is apparently a cold and uncompromising man, who shows no understanding for his children and has planned out the lives of his sons as his own successors already. In the manga, he acknowledges Kyoya as a possible successor despite being the third son. In the anime, he states he had already decided Kyoya would inherit Ootori Medical from him (in the manga he states it is a possibility), only to have his third son buy it and return it to his control without ever revealing his identity. He wants Kyoya to marry Haruhi in the anime.