At this point, when he had a full-scale armed conflict with the Ashikaga clan of the To family and the Chichibu clan who always antagonized, he defeated by the operation to force crossing the Watarase-gawa River (the Chichibu Ashikaga battle) and then he firmed the foundation of his success in Northern Kanto region.
ここに至り、かねてより敵対していた藤姓足利氏・秩父氏らと本格的に武力衝突し、渡良瀬川の強行渡河作戦によってこれを撃破し（秩父足利合戦）、さらに北関東における地盤を確固たるものにした。