15 Minutes

Two men have been called "the last ninja." The first is Fujita Seiko, who lived over a hundred years ago. Introducing himself as the last ninja, he held demonstrations throughout Japan and researched ninja arts. Going over footage of Fujita, we discuss the principles he taught. The second is Kawakami Jinichi, who is still alive today. We introduce the training he's continued for over sixty years and scientifically analyze a ninja breathing technique called "okinaga" to determine its effect.

We meet with two specialists at the forefront of ninja research. In 2021, Fukushima Takamasa found the Kanrinseiyo. Known to exist but never seen before, it's said to be the source material for the famous ninja manual, the Bansenshukai. It reveals previously unknown information about the ninja, including group tactics, night infiltration methods and a new ninja tool. We also learn about the ancient manuscripts Professor Yuji Yamada discovered at the Library of Congress in the US.

The Tokyo area is one of the most densely populated places on the planet. Very small properties have long been a feature of the urban landscape, but many modern "kyosho jutaku" showcase the expertise with which architects satisfy the requests of future owners. We join architect Koshima Yusuke as he visits these tiny houses, and sees for himself the clever ideas that are used to create a cozy living space. This time, a house with an unusual living room—it hasn't got a roof!

The Tokyo area is one of the most densely populated places on the planet. Very small properties have long been a feature of the urban landscape, but many modern "kyosho jutaku" showcase the expertise with which architects satisfy the requests of future owners. We join architect Koshima Yusuke as he visits these tiny houses, and sees for himself the clever ideas that are used to create a cozy living space. This time, a gradient of light spilling down a spiral staircase.

There are more than 1,300 companies in Japan that have been in business for over 200 years. How have these companies, which have survived challenges such as wars, natural disasters and economic crises, continued to operate for so long? This time, we will take a look at a company that was founded as a kimono shop in 1611 and later developed into a department store. What difficulties has this company overcome during its long history? What has it worked to preserve for over 400 years? Learn the secrets of its longevity.

There are more than 1,300 companies in Japan that have been in business for over 200 years. How have these companies, which have survived challenges such as wars, natural disasters and economic crises, continued to operate for so long? This time, we will take a look at a company that was founded in 1699, selling katsuobushi bonito flakes, an ingredient in dashi stock. What difficulties has this company overcome during its long history? What has it worked to preserve for over 300 years? Learn the secrets of its longevity.