This study aims to clarify how new elements were accepted into the traditional form and transformed towards the beginning of the pre-modern period by focusing on the designs and techniques surrounding the uchinori-nageshi of main shrine buildings in the Kinai region during the medieval period. The representation using mimawashi of uchinori-nageshi had already been established at ikkensha shrines including the chinjusha shrines in temples by the late Muromachi period, and flourished at sangensha shrines in the Momoyama period. Investigating the background of these transformation revealed that a common element was the involvement of Shitenno-ji carpenters.
