For this return mail, the Ashikaga clan initiated a legal action, asserting that such a way of writing was only allowed to the Ashikaga clan as a Monyo of the Minamoto clan, and that the Yuki clan who were a mere vassal must refrain from using it.
これに対して、足利家より幕府に訴えがあり、このような書式は源氏の門葉たる足利氏に許されたものであり、御家人に過ぎない結城氏は遠慮すべきである旨を主張した。