In 1351, Takauji, who lost to Tadayoshi of the Southern Court in the Battle of Uchidehama (Uchidegahama) in Settsu Province, accepted Tadayoshi's condition that Moronao and his brother be forced to retire from politics and become monks.
正平6年/観応2年（1351年）、摂津国打出浜の戦いで直義・南朝方に敗れた尊氏は、師直兄弟の出家を条件に和睦した。