In 1379 when Yoriyuki lost his position due to Yoshimasa SHIBA's work, Yoshimitsu exhibited his skill to rule the government and gradually started getting involved in the business of the Imperial Palace.
1379年に斯波義将などの動きで頼之が失脚すると義満の政治手腕が発揮され、徐々に朝廷の事務にも介入を始める。