Appointed to the hereditary position of Shugodai (delegate or military governor of a province) of Awa Province, the Miyoshi clan steadily expanded its presence while Nagayoshi MIYOSHI was head of the family, while opposing the Ashikaga Shogun and his deputy from the Hosokawa clan.
阿波国守護代出身の三好氏は、三好長慶のときに、足利将軍や管領細川氏と対立しながらも、着実に勢力を伸ばしていった。