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

Oita is a city located on the island of Kyushu, and is known for its hot springs, cuisine, and beautiful coastal scenery.

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.