The remains of Awajimaru (Kuruwa), in which the residence of the Fuse clan used to be, are located independently at the east edge of the Kannonji-jo Castle site, and the direction is regarded as Kimon (the northeastern [unlucky] direction).
観音寺城の東の端に一郭独立したような形で、府施氏の居館淡路丸の曲輪跡があり、丁度観音寺城の鬼門の方向に当たるとされている。