Historically, this case is similar to the fact that the Kamakura bakufu presented the principle of ryoto tetsuritsu (alternate accedence from two ancestries of imperial families) to the imperial court which was split over the issue of the succession to the throne. (The issues regarded as questionable on that are also common to which were difficult issues even for the authority of the bakufu to settle and arose discussions later such as the Shie Incident and the Songo Incident.)
これは歴史上で見れば、鎌倉時代に皇位継承で朝廷内が紛糾した際に鎌倉幕府が両統迭立原則を呈示して仲裁にあたった事例に近い性質のものである（ここで問題とされたものは、後に紫衣事件や尊号一件などで再び議論が持ち上がったものばかりで、幕府権力をもってしても困難な課題であった事も共通している）。