Karate, another martial art that originated in Japan, has also become a popular sport and is practiced by millions of people around the world.

The Heian period, which lasted from the 8th to the 12th century, was a time of great cultural and artistic achievement in Japan.

Sword Art Online, created by Reki Kawahara in 2009, is a popular anime and light novel series that takes place in a virtual reality MMORPG world.