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Ryuumon-kutu is a research institution which came out in 1998 at a place that has traditinally been regarded by Japanese people as an an awesome region bordering this world and an another. The main house of Ryuumon-kutu is a traditional farmer's wooden house, which was build more than 100years ago. The institution is devoted to flexible use for the development of creative studies in the field of theoretical physics.

We can see the sky thick with stars at cloudless night and dancing of firefly's lamp in summer.  All clocks have been stopping in the Ryuumon-kutu, and we can devote ourselves to original and creative research which is free from current trend of research, in particular, in US and the West. There is a self-contained facilities for long-stay.

Time's arrow turns on backward, forward  and grow stagnant in the uninterrupted tranquility in the age-old house. All stayers will be astounded by the fact that time length of a day is very long in this space. The time scale here is quite different from one in daily life. We can see nostalgic imposing scenery as beautiful range of small mountains covered with greens, and can really feel the presence of atmosphere when we come outside. We can catch addressing voice of the soul when we take old trails passing through the mountain side. Kawaraya space not being bound by time make us sensitive to sound of soul in the space.


Swine and "tanuki" are sometimes haunted and leave behind far-out idea and illusion in our image with their footprints. We call it "tanuki-trick" with realistic and imaginary truth. The trick make various obsessional and creative investigations frustrated, stagnant and evolved. The results achieved through idea and inspiration has been published in physics journals such as Physical Review, Physical Review Letters, Journal of Physics, Annals of Physics, Butsusei-kenkyu and so on. Accordingly, Ryuumon-kutu attracts the number of applicants from both domestic and overseas.

The administration and management voluntary effort of users. The user is charged fees if necessary for the sake of maintenance charge. Then "payment in kind" and/or "rendering of service" are sometimes welcomed. The redevelopment of the old foot path in its surroundings is also one of program in Ryuumon-kutu. It is worth noting that the creative function and fruits of research spontaneously evolve without any authoritative and/or public support.

Finally, continued existence of the Ryuumon-kutu is based on good faith of the owner and neighboring peoples. We would like to express our thanks to them.

"we should accept disaster when the time of disaster comes,
we shuld accept death when the time of death comes,
this is the mistry strategy to avoid the disaster " by Ryoukan.
imposing scenery of the neighborhood Spring Winter photo1 photo2 photo3