Career
He was also the daimyo of the Takamatsu Domain. Kazumasa was the eldest son of Ikoma Chikamasa. He fought with distinction under Oda Nobunaga, and then in of Korea with Toyotomi Hideyoshi"s forces.
He sided with the Tokugawa at the Battle of Sekigahara, though his father sided with the forces of Ishida Mitsunari.
As a result, the Ikoma family"s fief was saved. His father yielded him headship in 1600.
lieutenant was then that the fief"s capital was moved from Marugame Castle to Takamatsu Castle.