Kokuzo Shrine is a historic Shinto shrine located in Teno, Ichinomiya-machi, Aso City, Kumamoto Prefecture. Situated to the north of Aso Shrine, it is also known as Kitamiya, meaning the Northern Shrine.
The shrine is listed in the Engishiki, a compilation of laws and regulations from the Heian period that includes records of important shrines. Its former official rank was Ken-sha, or Prefectural Shrine. Surrounded by woodland, Kokuzo Shrine preserves religious traditions associated with the early development of the Aso region.
The principal deity is Hayamikatama-no-Mikoto, a son of Takeiwatatsu-no-Mikoto, the principal deity of Aso Shrine. According to tradition, Hayamikatama-no-Mikoto helped develop the land of Aso, guided agricultural activities, and encouraged tree planting. He has consequently been revered as an important figure in the region’s history and religious life.
Kokuzo Shrine has a long history and is listed in the Engishiki Jinmyōchō, a register of shrines compiled in the early tenth century. It is one of four shrines in the former Higo Province recorded in this important historical document.
The other three shrines were Takeiwatatsu-no-Mikoto Shrine, now associated with Aso Shrine; Asohime Shrine, also associated with Aso Shrine; and Hikino Shrine. Kokuzo Shrine was therefore recognized as one of the important religious sites of ancient Higo Province.
According to the Higo Kokushi, a historical account of Higo Province, Hayamikatama-no-Mikoto was appointed provincial governor during the reign of Emperor Sujin. The same account states that Kokuzo Shrine was repaired and its religious ceremonies organized in the eighteenth year of Emperor Keikō’s reign, traditionally dated to AD 88.
Hayamikatama-no-Mikoto is said to have worked alongside his father, Takeiwatatsu-no-Mikoto, to develop the Aso region. Their activities included establishing the foundations for farming and encouraging the planting of trees. These traditions reflect the close connection between the shrine, agriculture, forestry, and the development of the local community.
The shrine’s principal deity is Hayamikatama-no-Mikoto, regarded in the Kokuzō Honki, an ancient genealogical and historical text, as the first provincial governor of Aso. The shrine also enshrines his consort and children.
Hayamikatama-no-Mikoto: The principal deity of Kokuzo Shrine and a son of Takeiwatatsu-no-Mikoto, the principal deity of Aso Shrine. He is revered for his role in the early development of the Aso region.
Amamiya-hime-no-Mikoto: The consort of Hayamikatama-no-Mikoto. She is also known as Kamachi-hime-no-Mikoto and is described in local tradition as a female deity associated with the sea gods.
Takahashi-no-Kami: The second child of Hayamikatama-no-Mikoto.
Hinomiyagami: The third child of Hayamikatama-no-Mikoto.
These deities reflect the shrine’s traditional genealogical links with Aso Shrine and its role in preserving the mythology and religious heritage of the region.
The present shrine buildings were reconstructed in 1672, during the Kanbun era, under the direction of Hosokawa Tsunatoshi, the third lord of the Kumamoto Domain. Although the shrine’s origins are much older, this reconstruction established the buildings that have carried its traditions forward through subsequent generations.
The continued preservation of the sanctuary reflects the importance of Kokuzo Shrine to the people of Aso. Its setting among the trees also gives visitors a sense of the relationship between traditional Shinto worship and the natural landscape.
Two ancient burial mounds near Kokuzo Shrine are traditionally regarded as the tombs of Hayamikatama-no-Mikoto and his consort. Both are important archaeological features associated with the shrine’s history.
Kamimikura Kofun is traditionally identified as the tomb of Hayamikatama-no-Mikoto. It is a circular burial mound with a horizontal stone burial chamber dating to the latter half of the sixth century.
Shimomikura Kofun is traditionally regarded as the tomb of Amamiya-hime-no-Mikoto, the consort of Hayamikatama-no-Mikoto. Like Kamimikura Kofun, it is a circular mound with a horizontal stone chamber dating to the latter half of the sixth century.
The burial chambers are constructed from enormous blocks of andesite and cut stone made from Aso lava. Their scale and historical significance make them notable examples of the region’s ancient burial architecture.
Kokuzo Shrine preserves agricultural ceremonies that have been passed down through generations in the Aso region. These rituals are designated Important Intangible Folk Cultural Properties of Japan and reflect the traditional relationship between religious belief, farming, and the changing seasons.
The ceremonies associated with the shrine include the following:
Utaizome: A traditional singing ceremony marking the beginning of the year’s ritual cycle.
Spring Festival: A seasonal observance associated with prayers and rites for the agricultural year.
Onda Festival: A traditional rice-planting festival that expresses hopes for a good harvest.
Wind Festival: A ceremony associated with prayers concerning the weather and agricultural conditions.
Nemuri-nagashi: A traditional ritual connected with the agricultural calendar and local customs.
Tanomi-sai: A festival associated with the agricultural cycle and prayers for the community.
These events demonstrate how religious ceremonies have helped preserve the agricultural traditions of Aso. They also offer insight into the customs through which local communities have traditionally prayed for favorable weather, abundant crops, and continued prosperity.
The grounds of Kokuzo Shrine were once home to an enormous Japanese cedar known as the Teno Cedar. The tree was designated a National Natural Monument in 1924 and was long admired for its impressive size and age.
However, the tree was damaged by Typhoon No. 19 in 1991 and suffered major breakage. Following a review by the Cultural Properties Protection Council, its designation as a Natural Monument was revoked in 2000.
Although the famous cedar no longer retains its former status as a protected natural monument, its history remains part of the shrine’s cultural heritage and illustrates the importance of ancient trees in the region’s religious landscape.
Kokuzo Shrine’s annual festival is held every year on July 26. During the festival, worshippers give thanks to Hayamikatama-no-Mikoto and the other enshrined deities, while praying for peace, stability, and prosperity in the local community.
The ceremony continues the shrine’s longstanding role as a place where people gather to express gratitude and seek blessings for the region’s future.
Several subsidiary shrines stand within the grounds of Kokuzo Shrine. These smaller sanctuaries are also places of worship and form part of the shrine’s wider religious landscape.
Kadomori-sha: A subsidiary shrine within the grounds.
Suijin-sha: A shrine dedicated to a water deity, reflecting the importance of water in the natural environment and agricultural life of the Aso region.
Namazu-no-Miya: Another subsidiary shrine located within the grounds.
From Miyaji Station on the JR Kyushu Hōhi Main Line, the shrine is approximately 15 minutes away by taxi.
Kokuzo Shrine is approximately 45 kilometers from the Kumamoto Interchange on the Kyushu Expressway.
Kokuzo Shrine is closely associated with the traditional stories of Hayamikatama-no-Mikoto, who is revered for helping develop the land of Aso and establish the foundations of agriculture and forestry. Its ancient historical references, seventeenth-century shrine buildings, nearby burial mounds, and agricultural ceremonies preserve different aspects of the region’s cultural heritage.
The former Teno Cedar, the subsidiary shrines, and the annual festival on July 26 further illustrate the site’s importance to local religious life. For visitors exploring Aso, Kokuzo Shrine offers a quiet setting in which to discover the myths, agricultural traditions, and historical landscape that have shaped this part of Kumamoto.