Overview and Mountain Setting
Traveling north from JR Yoshinaga Station on the Sanyo Main Line and following the Hattoji River leads to the mountainous area of Hattoji, at an elevation of approximately 539 meters. Here, amid the historic landscape associated with the former provinces of Bizen, Harima, and Mimasaka, Kokenji stands as an ancient temple with a long religious heritage.
The area is traditionally associated with the monk Dokyo and the reign of Emperor Shomu during the Nara period. Hattoji once flourished as a major center of mountain Buddhism, attracting numerous monks and pilgrims. At the height of its prosperity, the religious complex is said to have included eight temple precincts, 64 monks’ quarters, and Buddhist pagodas, making it a revered destination for worship.
In 1974, the entire Hattoji mountain area was designated by Okayama Prefecture as Hattoji Furusato Village. Since then, efforts have been made to preserve and maintain its historic buildings and traditional rural scenery.
The Origins of Enichisan
Hattoji Mountain has been revered as a sacred site for mountain religion since ancient times. The surrounding area was also associated with early ironworking communities. The place was originally known as Hattōchi before its name gradually evolved into Hattoji, eventually giving rise to the names Hattoji Mountain and Hattoji Village.
Traditional Accounts of the Temple’s Foundation
According to temple tradition, the temple was founded in 728, during the Nara period, under the imperial patronage of Emperor Shomu. Accounts differ regarding the religious figures involved in its establishment, naming the monk Ganjin or the statesman Wake no Kiyomaro alongside Dokyo. The temple is also said to have once enshrined a sacred Eleven-Headed Kannon attributed to the revered monk Gyoki.
The Wake clan is believed to have supported the temple, which attracted many itinerant Buddhist monks known as Koya hijiri. Its influence became so widespread that Hattoji earned the nickname “Koyasan of the West,” reflecting its importance as a center of Buddhist practice.
From the Kamakura Period to the Edo Period
In 1184, according to historical tradition, Minamoto no Yoritomo ordered the reconstruction of the temple’s halls and monks’ quarters, establishing Hattoji as a place of prayer for the Kamakura shogunate. During this period, the complex is said to have included a thirteen-story pagoda and 72 temple buildings, marking the height of its prosperity.
The temple later suffered severe damage during the conflicts of the Nanboku-cho period, when the main hall and other buildings were destroyed by fire. Reconstruction took place during the Edo period with support from the Okayama Domain, allowing the temple to recover from this period of decline.
Reconstruction and the Present-Day Temple
Despite its revival, Kokenji was again destroyed by fire during the Kansei era (1789–1801). In 1816, Myodo, regarded as a key figure in the temple’s revival, led reconstruction efforts. In 1832, the temple adopted the name Shingon-shu Enichisan Kokenji.
The temple came to enshrine sacred images of Fudo Myo-o, Aizen Myo-o, Bishamonten, and Kobo Daishi. Today, Kokenji continues to preserve its religious traditions in the quiet mountain surroundings of Hattoji Furusato Village.