The temple history of the Yūsenji 祐泉寺 in Mishima City states that the Daikōji 大興寺 was built on the grounds of the Yūsenji during the Nara period as a private temple of Hasetsukabe Togama 丈部富賀満 to protect the nation. The original text is found in the Nippon Montoku Tennō Jitsuroku 日本文徳天皇実録 compiled in the Heian period （879）.
In this paper, I consider the available information about Hasetsukabe Togama （dates unknown）, who can be said to be a phantom. Hasetsukabe Togama lived in the southern part of the Izu 伊豆 Peninsula, and worked to establish clan temples in the Izu region under the direction of the government to protect the nation, among which was the Daikōji, which was a temple belonging to the Yakushiji 薬師寺 group.
Through historical materials and excavated relics, I clarify that the Daikōji was a temple of the Hossō 法相 sect and explore how zazen 坐禅 meditation practiced at the temple is different from today’s zazen.
