Yokohama is Japan's second-largest city and a major port city located south of Tokyo, with a population of over 3.7 million people.
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.
