Why is a Japanese dude living at Mexico City's airport?

Hiroshi Nohara is on a layover at the Mexico City airport. It has lasted almost three months, and he has no plans to leave.

For reasons he can’t explain, the Japanese man has been in Terminal 1 of the Benito Juarez International Airport since Sept 2, surviving off donations from fast-food restaurants and passengers and sleeping in a chair.

At first, he frightened passengers, and airport authorities asked the Japanese Embassy to investigate why the foul-smelling man refused to leave. Now, he’s somewhat of a celebrity, capturing Mexico’s collective imagination with nearly daily television news reports on his life at the food court. More...

See also:

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2. More than 100 homeless people live at Heathrow...
3. Homeless man, with a laptop, cell-phone and full-time job, lives in a tent...
4. Crisis: the man who sleeps in Hotel Honda...