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.

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

The Muromachi period, which lasted from the 14th to the 16th century, was a time of great artistic and cultural achievement, including the development of tea ceremony and the Noh theater.