A Local Perspective on Life in Tsukuba, Ibaraki, Japan.

April 1st is the Ozagawari ( 御座替り)- Mt. Tsukuba’s Most Important Traditional Rite


Mt. Tsukuba, with its twin peaks, has long been seen as a manifestation of the Male and Female forces


By Avi Landau


At 877 meters it is not very high or majestic. But for those of us who live on the vast (by Japanese standards, of course!) plain to its south, the slightly crushed M figure of Mt Tsukuba is like a trusty old friend, always reassuring us of where we are and helping us get our bearings when we are lost. No less important, its forested slopes put Japan’s seasons on display for us while on the flatlands below the greenery has been disappearing at a frightening pace and snow accumulation has become a rare occurrence.

It also bears plenty of cultural and historical significance.

For the Japanese, Mt Tsukuba has been a sacred mountain since time immemorial. Its twin peaks have apparently long symbolized the interaction of the Male and Female Forces (the Yin and Yang) for the inhabitants of the area.

In fact, we know from poems in the Manyoshu ( compiled in the 7th century), and from references in the ancient chronicles of this area ( the 8th century Hitachi no Kuni no Fudoki) that twice a year, in spring and fall, a great COUPLING festival now known as the KAGAI (or UTAGAKI), was held at what is now called Mt Tsukuba ( and several other mountains in what is now Ibaraki and other places in Japan). Though no one now knows exactly what went on at these affairs, it seems certain that groups of men and women would gather at separate areas at the foot of the mountain and then climb to the valley between its peaks. There, men would try to pair off with the women with the composition of and recitation of poems used as the main way of hooking up. Just what would happen next can only be left to conjecture, though some believe that the KAGAI was a bi-annual festival of free (sexual) love.

( Of great interest to me is the fact that a similar festival still held twice each year by the Miaow/Hmong People of Southern China, in which men and women gather at a twin-peaked mountain and get to know each other- first through poems- and then move on to greater intimacy which lasts till the cock crows. Since some believe that the torii gates in front of Japanese shrines as well the fermented beans ( natto) which are so important in the Ibaraki traditional diet also have their roots in that area among the Miaow, one cannot help but think that some of these people at one point migrated to Japan.)

Just when the KAGAI tradition died out no one is really sure, though by the Heian Period, it seems to have already disappeared, as under the influence of the Yamato Court the twin peaks came to be associated with the ancestral Gods of Japan, Izanagi and Izanami, who are now enshrined there.

The mountain has attracted many holy men over the years and during the Edo Period (1600-1867) a temple was built half-way up its southern slope to protect Edo castle from the unlucky North-Eastern quadrant, and this temple, then Chuzen-Ji, was generously endowed and supported by Japan’s long-ruling clan, the Tokugawa.

The unique Sacred Bridge within the precincts of the Mt. Tsukuba Shrine is opened to the public only twice a year- on the days of the Ozagawari

In 1868 Japan underwent revolutionary reforms and the Emperor was restored to supreme power (in name only, some say). The Meiji government also carried out the regrettable policy of separating Buddhism ( considered a foreign import) from the supposedly pure, native belief which came to be called Shinto. Thus Chuzen-Ji is now Mt Tsukuba Shrine, popular ( quite appropriately) as a place to pray for marital happiness.

And I think that it can be said, that despite the fact that the KAGAI has died out, its spirit lives on in sublimated form in a ceremony held twice a year at the mountain.

The priests of the Mt Tsukuba Shrine, together with the assistance of local residents, have continued to perform what is considered the most important of the mountain’s living rituals: the Onzagawari (御座替り)- also known as Ozagawari or even OZAGARI. This ceremony takes place on April and November 1.

The ceremony at first appears to be a typical Japanese Mountain God festival in which the deities are brought down to the fields in spring to bring abundant harvests, and are then escorted back up to their mountain abodes for the winter.

Mt Tsukuba’s spring and autumn rituals seem at first glance to be of this pattern, but there is a twist. Since the ancestral couple are enshrined on its peaks and the shrine half-way up the mountain is dedicated to family harmony, instead of focusing on agriculture the Ozagawari emphasizes love and protection of children (which are the result of the interaction of the male and the female).

On April 1st, a procession carries a small omikoshi (portable shrine) bearing the child god up the mountain, where it is cool, high above the sweltering lowlands and at the same time the parent gods were carried down to the center of the mountain. The positions of the parents and child are switched back again in autumn (this will take place on  Nov. 1st ).

The ceremony begins early in the morning and continues till late afternoon as carriers bear the omikoshis up and down the mountain (they use the cable car for some of the way).

At Roku Chome parishioners wait for the Ozagawari to begin

The best ( and most common) way of observing this ceremony is to wait at the stone torii gate in the area called ROKU CHO-ME (六丁目), which is a few hundred meters below the former Tsukuba Post Office ( now a museum), on the old pilgrims road to the Mt Tsukuba Shrine. At 2 PM, you will find a small group gathered ( a mere shadow of the crowds that used to amass there) along with the local parishioners dressed in their festival wear. There is usually some music ( played by local amateurs) and aways some prayers before things get underway at 2:30.

A Shrine Maiden approaches as the Ozagawari gets underway

By getting underway I mean that the OMIKOSHI bearing either the parent or child gods ( depending on the season) will be born unto the parishioners shoulders and then carried trudgingly up the steep stairway, and then along the road, to the Mt. Tsukuba shrine.

A few very old residents can be found sitting along the procession`s path waiting for it to pass. I wonder how they must feel when they see how this great event of their childhoods has now been all but forgotten.

The procession proceeds up this old ( and steep) pathway

Besides photographing the picturesque procession, maybe the most special thing that a visitor can do on these ceremony days is to cross the sacred bridge (a red, wooden, covered bridge of rare design) at the Mt Tsukuba Shrine, which is only open on the first days of April and November.

And makes its way past this old post office

Taking advantage of the chance to cross the SHINKYO ( Sacred Bridge)- which is open only on the days of the Ozagawari



  • Mamoru Shimizu says:

    Views of Mt Tsukuba changes from having two humps to a pyramid shapes, Every views I am enjoying.
    The free sex-festival on there during middle era was written in the famous novel of “Taira-no-Masakado” who was a famous rebellious land load hero in this area in 10th century by Eiji Yoshikawa. By his novel I knew the festival.
    It might be fun to have Ozagawari in my own home by certain interval !? For what purpose?? To decide hierarchy?? Or who should be the washer of dishes?

  • Julian says:

    Thanks for the information Avi,
    The festival fell on a weekend this year so I finally managed to see some of Ozagawari matsuri. The summit of Tsukuba was crowded with day-trippers enjoying the fine weather, but few people aside from the participants knew what the matsuri was about. In a way its a nice change from the more well-known, crowded festivals and I did manage a few good pictures. The crowd was not large, but there was no shortage of enthusiasm among participants or spectators.

  • alice says:

    http://www.yomiuri.co.jp/dy/features/science/T121030001930.htm – the twin peaks were featured in Kevin Short’s column