The Tokyo Marathon, first held in 2007, has become one of the most popular marathons in the world, with over 30,000 runners participating each year.

Japan's recorded history dates back to the 5th century AD, when the first known emperor, Emperor Jimmu, ascended to the throne.

Natto, a fermented soybean dish that is known for its strong odor and slimy texture, is a popular Japanese food that is often eaten for breakfast.