According to the ``Shui Ojoden,'' written in the late Heian period, Rokumanji Temple was left in ruins by the founder, Lord Yoshimatsu Kawase, at the direction of Yasuke Shonin, a nembutsu priest, who visited with a confessional dream. The hall that was built on the land in this area was the founding of Ojo-in. Yasuke Shonin practiced the Go-nen-mon gate every day while looking at the setting sun, saying, ``The east gate of Totennoji Temple is the center of the east gate of Jokaku Raku. Ta. Since then, Ojoin has prospered, attracting the faith of people who wish to attain paradise. In addition, Ojoin has a deep connection with Masayuki Kusunoki, the eldest son of Masashige Kusunoki, who was active on the Southern Court side during the Nanbokucho period. The tombstone is still enshrined as a graveyard to this day.