In Hongan-ji Temple of Jodo Shinshu sect (the True Pure Land Sect of Buddhism), which was the largest armed religious power in the Sengoku period, Kyonyo, the eldest son of Kennyo, the eleventh chief priest of the temple, and Junnyo, the third son of him confronted after Kennyo died.
戦国時代最大の武装宗教勢力であった浄土真宗本願寺は第十一世門主・顕如の死後、顕如の長男・教如と三男・准如が対立した。