In 2022, the world of virtual reality was disrupted when genius programmer Akihiko Kayaba introduced NerveGear - the first full-dive system that opened up unlimited opportunities for VRMMORPGs.
Four years later, a next-generation wearable device named Augma was created to compete with NerveGear and its successor, Amusphere. Although it lacks full-dive functionality, Augma utilizes Augmented Reality (AR) to transport players into the game. It's user-friendly, safe, and allows players to remain conscious, making it a popular addition to the market. Augma's "Ordinal Scale" (OS), an ARMMORPG developed exclusively for the device, is the most famous game.
Asuna and her crew had already been playing OS for some time when Kirito eventually joins them. However, they quickly learn that Ordinal Scale isn't just about entertainment...
