Yano Kunimura served as a bushō during the Sengoku and Azuchi-Momoyama periods. He was a retainer of the Miyoshi clan and served as the lord of Yano Castle in Awa Province. Kunimura was born as the eldest son and heir of Yano Toramura.
In Awa, Kunimura served Miyoshi Jikkyū. After the death of Jikkyū at the Battle of Kumeda in the third month of 1562, Kunimura served Jikkyū’s son, Miyoshi Nagaharu. In 1571, upon orders of Nagaharu and his senior retainer, Shinohara Nagafusa, four neighborhoods in the Ōchi District of Sanuki Province governed by Sangawa Motochika were transferred to the Miyoshi clan. Thereafter, Kunimura entered Hiketa Castle and Yasutomi Morisada entered Toramaru Castle.
In the third month of 1577, after Miyoshi Nagaharu based in Shōzui Castle in Awa was killed by Hosokawa Saneyuki (the military governor of Awa), Izawa Yoritoshi, and Ogasawara Narisuke, Kunimura returned to Awa and, together with Shinohara Jiton, murdered Yoritoshi, recaptured Shōzui Castle, and confronted Saneyuki and Narisuke. In the first month of 1578, Kunimura welcomed Sogō Masayasu to Shōzui Castle and paid allegiance to him as the head of the Miyoshi clan.
In the twelfth month of 1579, Miyoshi Yasutoshi (the eldest son of Miyoshi Yasunaga and lord of Iwakura Castle) and Takeda Nobuaki (the lord of Waki Castle) colluded with Chōsokabe Motochika of Tosa Province. Miyoshi Yasutoshi demanded that the bushō from the Miyoshi family deploy to lead forces to invade Tosa. Kunimura, along with Miyoshi Echigo-no-kami, Mori Hida-no-kami, Kawamura Sama-no-jō, responded to the request, but, outside of Waki Castle, were killed in action by a torrent of arquebus fire from forces under Miyoshi Yasutoshi and Takeda Nobuaki.