There is a saying in Japan: "Old people are everybody's treasures."
Take Masaaki Hatsumi, who is 77 years old and one of the world's grandmasters of Ninjutsu. Or Shino Mori, who at 105 is the oldest, and zaniest, television news reader in the world.
And let's not forget Shigeo Tokuda, who has starred in 350 pornographic films and, at the age of 74, continues to work regularly.
These are Japan's super-elderly. And their numbers are growing every day.
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