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.

The Great East Japan Earthquake of 2011 and subsequent tsunami devastated Japan's northeast coast and caused the Fukushima nuclear disaster.

Dashi, a type of stock made from fish and seaweed, is a key ingredient in many Japanese dishes and is often used to add flavor and umami.