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 Taisho period, which lasted from 1912 to 1926, was marked by political instability and social change, including the rise of labor unions and women's rights movements.

The 3D printing technology, developed by Dainippon Screen in the 1980s, has revolutionized manufacturing and made it possible to create complex objects with ease.