In 1379, Yoshimitsu's residence was surrounded by the anti-Yoriyuki Shugo Daimyos such as Yoshiyuki (Yoshimasa) SHIBA and Yoriaki TOKI, who requested that he dismiss Yoriyuki, and consequently Yoriyuki was dismissed (Koryaku Political Change).
1379年（天授5年/康暦元年）、義満は反頼之派の守護大名である斯波義将や土岐頼康らに邸を包囲され頼之の罷免を求められ、頼之は罷免される（康暦の政変）。