Kainō Michimori served as a bushō during the Sengoku period. He was a member of the kunishū, or provincial landowners, in Iyo Province, serving as the lord of Kotegataki, Kurase-Ōkuma, and Toyagamori castles. He had the real name of Michimori (written with a different character).
Michimori was born as the son of Kainō 通運.
Michimori served the Kōno clan of Iyo and is counted among the Eighteen Generals of the Kōno. He served as a chief retainer. In 1533, he was attacked on several occasions at his base by neighboring Ōno Toshinao, but, with the support of the Hiraoka clan and others, together with his father, repelled the attacks.
In 1585, during the Invasion of Shikoku by Hashiba Hideyoshi, the Kōno were attacked by the Kobayakawa clan giving rise to a division of opinion among those in the clan as to whether to surrender or to resist. The Kainō were in the faction advocating for surrender.
After the downfall of the Kōno, he always visited the shrine to pay homage to the family of his former lords. His son, Kainō Michisato, returned to farming, later becoming a shōya, or village head.