He then attempted to subjugate Mochiuji ASHIKAGA, the Kamakura Kubo, using the excuses that Ashikaga kept using the era name Shocho even after it had been changed from Shocho to Eikyo, and that Ashikaga appointed at his discretion the head priests for the Five Official Temples of Kamakura.
そして鎌倉公方足利持氏が、正長から永享に改元したにも拘らず正長の年号を使い続け、また鎌倉五山の住職を勝手に決定するなどの専横を口実とし討伐を試みる。