After taking control of kokuga (provincial government office compounds) in Kazusa Province, Tadakiyo forgot Hirotsun's favor and took a high-handed attitude and detained Yoshitsune, son of Hirotsune, who was visiting Kyoto for pleading.
上総の国衙を掌握した忠清は、広常に対して恩を忘れた強圧的な態度に転じ、陳弁のため上洛した広常の子・能常を拘禁する。