He is said to have been familiar with Onmyodo (way of Yin and Yang; occult divination system based on the Taoist theory of the five elements), Ekigaku (art of divination), and astronomy, and the stories handed down so far includes traditions in which he made full use of Ekigaku and astronomy (such as telling fortune of the lands in selecting the land for construction of Hirosaki-jo Castle).
陰陽道・易学・天文学に通じていたと伝えられ、伝えられる話にも易学や天文を駆使した伝承が伝わっている（弘前城築城時の城地選定の際、土地の吉凶を占う、など）。