Bosses from the original death game, Sword Art Online , begin spawning at various real-world coordinate locations across Tokyo at night.

A new wearable multi-device called the is released to compete with traditional full-dive technology.

The ruthless #2 ranked player, Eiji , begins deliberately targeting original SAO survivors during these fights.

Unlike the NerveGear or AmuSphere, players remain completely awake and use their real physical bodies to interact with data superimposed onto the real world.