According to the second theory, it is said that the letter of Migi-daimonji (the right Daimonji) was designed by Yoshimasa's vassal Kamon HAGA based on the handwriting of Keisan OSEN who was a priest at Shokoku-ji Temple ("Meika Iko" (literary remains of Meika UNO) and "Topography of Sanshu-Meisekishi").
この説では右大文字の文字は、相国寺の僧・横川景三の筆跡により、義政の臣・芳賀掃部が設計したという（『明霞遺稿』・『山州名跡志』）。