He added to the Genji scholarship of the Sanjonishi family not only theories on earlier commentaries such as the "Kakai-sho," the "Kacho yojo" (Atmosphere of Flowers and Birds) and the "Rokasho" (playing with blossoms), but also theories of his own, and annotated each volume.
三条西家の源氏学に『河海抄』・『花鳥余情』・『弄花抄』などの先学の説、更に自説を加えて各巻ごとに注釈を入れている。