After assuming the position of the head of Ashikaga School, he attended Ieyasu TOKUGAWA during the Battle of Sekigahara and at its front, he distinguished himself by conducting divination (using bamboo divination sticks).
足利学校の長となるが、関ヶ原の戦いの折には徳川家康の陣中に随行し、占筮によって功績をたてた。