The Yakuo Bosatsu and Yakujo Bosatsu of Kofuku-ji Temple were originally attendant figures for the Honzon Shakanyorai in the Saikon-do (removed) Kofuku-ji Temple, and the current figures were reconstructed in the Kamakura Period, but Yakuo Bosatsu and Yakujo Bosatsu figures have been installed in the Saikon-do since it was established during the Nara Period.
興福寺の薬王・薬上菩薩像は、元は同寺西金堂（廃絶）の本尊釈迦如来像の脇侍だったもので、現存像は鎌倉時代の再興像であるが、奈良時代の西金堂創建時から薬王・薬上菩薩像が安置されていた。