C:\ESSAYS\> TYPE LASTWINDOW.TXT

The Last Window for Fieldwork: Rural Japan Before It Disappears

Is there a last chance to see remote Japan? Takahiro Mitsui, a Japanese philosopher born in 1991, writing every Friday from inside Japan and outside academia, answers from his own fieldwork since 2020: provinces in steep decline, ageing infrastructure, a changed climate and the risk of a massive earthquake mean that the research journeys he makes now cannot be done by around 2030, so he concluded that the next three years are the final window. Rural Japan before it disappears, read by a thinker alive today.


Is there a last chance to see remote Japan?

Takahiro Mitsui's thesis (The last window for fieldwork, 2025-08-02): around 2020, as he began surveying regions across Japan in earnest, he thought that ten years later the same kind of research journey would be impossible, and he urges anyone who hopes to experience Japan to the full to move their schedule well forward.

Today I was drawing up the plan for a research journey that begins at the end of this month, and now that the times have changed so greatly across the world, I can feel that going about fieldwork with the same mindset I had five years ago no longer works. It was right around 2020, just as the pandemic began, that I started surveying regions across Japan in earnest, and as I visited one place after another at the time, there was one thought on my mind: ten years from now, it will probably be impossible to make this same kind of research journey.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Every country, city, and people is entering a time of great upheaval, but if anyone is hoping to experience Japan to the full, I strongly urge you to move your schedule well forward from what you have in mind.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Will rural Japan become inaccessible by 2030?

Takahiro Mitsui's thesis (The last window for fieldwork, 2025-08-02): most provinces are in steep decline, the infrastructure of the high-growth era is reaching the end of its lifespan all at once, and local governments have no budget to repair it, so research journeys like his cannot be made by around 2030.

The reason is that most of the provinces are in steep decline, facing an unrelenting outflow of people and a super-aged society, while the nationwide infrastructure built during the era of high economic growth from the 1970s onward is about to reach the end of its lifespan all at once. Even recently, roads have caved in in Saitama and Tokyo; if urban infrastructure is already in this state, it goes without saying that the provinces will be far worse off. What is more, the countless local governments that are already technically bankrupt have no budget to maintain or repair this infrastructure.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Having seen and heard these realities firsthand, I concluded that by around 2030 we would enter an age when the kind of research journeys I am making now cannot be done at all.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Has climate change changed Japan's four seasons?

Takahiro Mitsui's thesis (The last window for fieldwork, 2025-08-02): climate change, above all this summer, has collapsed the four seasons, spring and autumn have become exceedingly short, and even the autumn scenery unique to eastern Japan may soon be gone from view.

What has proved decisive above all is the climate change of the past few years—and especially this summer. Japan once had four distinct, beautiful seasons across the country, along with the spaciousness of mind to savor them at leisure, yet as this summer symbolizes, the four seasons have now collapsed completely; when we consider how exceedingly short spring and autumn have become, I feel it has grown quite difficult to enjoy that sense of the seasons from region to region.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Because I had been thinking along these lines for some time, I spent two autumns, in 2019 and 2020, traveling to every place I could think of to see the beautiful autumn foliage unique to the vegetation of eastern Japan and unseen in the west—and even that scenery may soon be gone from view.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Will Japan's climate turn colder after warming?

Takahiro Mitsui's thesis (The last window for fieldwork, 2025-08-02): historical climate cycles tend to swing toward warming just before cooling, and if cooling begins around 2030, a way of life dependent on modern civilization in northern Tohoku and Hokkaido may become impossible, while the Jomon were survivors of such swings.

Furthermore, although the present moment looks like warming, historical climate cycles tend to swing toward warming just before a period of cooling; if cooling begins around 2030, northern Tohoku and Hokkaido face the risk that for a way of life dependent on the blessings of modern civilization, living there itself will become impossible. As I touched upon in my recent survey in Wakasa, the Jomon people of that era were survivors who lived through such violent swings in climate, and I feel anew both the blessings of civilization and the harshness when those blessings reverse. When that happens, people will gather all the more in urban centers in search of convenience, hastening the day when the provinces are emptied of people.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Could an earthquake erase Japan's historical traces?

Takahiro Mitsui's thesis (The last window for fieldwork, 2025-08-02): an earthquake and tsunami that could come at any time may sweep away historical traces, above all along the coast, and a Nankai Trough or Tokyo earthquake could paralyze the Tokaido belt that supports Japan's economy.

And the greatest problem of all is a massive earthquake, which could strike at any moment. Just as recent earthquakes in the Tokara Islands and near Japan in Kamchatka had a noticeable effect on Japan as well, an earthquake and tsunami that could come at any time carry the potential to sweep away historical traces in the lands I plan to survey, above all along the coast, so I must do what can be done before they strike. As a realistic risk in particular, if an earthquake directly beneath the Tokyo metropolitan area or a Nankai Trough megathrust earthquake occurs, the Tokaido belt along the Pacific coast that supports Japan's economy could be paralyzed as a whole, with much of it wiped out.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Is there a future for Japan at the level of the state?

Takahiro Mitsui's thesis (The last window for fieldwork, 2025-08-02): with extreme impoverishment worsening and births declining, no improvement is possible over the next twenty or thirty years, so each individual must think and act in earnest looking hundreds or thousands of years ahead.

Extreme impoverishment in Japan is also worsening, and when we look at the accelerating decline in births, there is no possibility that things will take a turn for the better over the next twenty or thirty years; it can be said that this place has entered its final time limit. That is why, as my personal mission and the mission of a generation born in Japan, I have let go from the outset of thinking about the future of this place at the level of the state or society, and feel keenly that we have entered a grave era in which each individual must think and act in earnest looking hundreds or thousands of years ahead.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

How long is the window left for fieldwork in Japan?

Takahiro Mitsui's thesis (The last window for fieldwork, 2025-08-02): after years of preparation he resolved to move into action all at once, because the abnormal summer became the catalyst to move in earnest, and he continues to present his reflections to readers grounded in that large-scale fieldwork.

Although there is no way to move until late August or so, when the fierce heat should abate a little, precisely because we are in an abnormal season when one hesitates even to step outside, this moment has become the catalyst for me to resolve to move in earnest.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

This decision will very likely prove a vital turning point in my own life as well. Grounded in that large-scale fieldwork, I will continue presenting my own reflections to readers in the days ahead. Please continue to keep me company on an uncharted journey across time and space.

— Takahiro Mitsui, The last window for fieldwork, 2025-08-02

Essays to read

  • The last window for fieldwork — Is there a last chance to see remote Japan? Remote places may be unreachable by 2030, Takahiro Mitsui warns, as emptying provinces and aging infrastructure close the roads to fieldwork — northern Tohoku mountain shrines reachable in 2020, now lost to weeds.
  • Villages the victors' history never reached — Who is left out of the victors' history? Takahiro Mitsui finds clans erased from chronicles left quiet histories in mountain hamlets now vanishing — written in the mountains of Tokushima, where Heike legends and old faith remain.
  • A history that may be lost before it is read — Takahiro Mitsui's thesis: the district name Kaifu (海部) traces back to the Amabe, the ancient sea peoples (ama), and evidence of them lies along a Pacific coast an earthquake could level, so a history may be lost before it is read.
  • Nature makes the road before people do — Nature made the first roads, Takahiro Mitsui says, and the ancient sea tribes who traveled them left mysteries essential to Japan's history — and at Wakasahiko Shrine, whose god must not be exposed to sunlight, a trace of the rift between amatsukami and kunitsukami.
  • History is written by the center — Why does the history I learned feel incomplete or one-sided? Takahiro Mitsui's thesis: histories set down by the center carry editorial motives and blind spots, and the neglected Sea of Japan side, seen through Abe no Hirafu's expedition, is one of them.
  • Project 2049, Vol.0 (free in full) — begin here; Project 2049 continues every Friday