However, Hirashima Kubo gradually lost the meaning of existence because not only was Nobunaga and his army, which was the supporter of the government led by Shogun Yoshiaki, too strong for the Miyoshi clan to stand down by themselves, but also there was the fear of the close-knit relationship between Hirashima Kubo and the Miyoshi clan, who went to rack after that.
だが、義昭政権の後ろ盾であった信長軍は三好氏が単体で退けるには強固であった点に加え、その後も没落していった三好氏との結びつきが余りにも強すぎた点を懸念されてか、平島公方は、その存在価値を次第に失っていったのである。