Sword Art Online is a light novel series written by Reki Kawahara, and illustrated by Abec. It has been adapted into three sets, one anime and video games. The Opening theme song is "Crossing Field" by LiSA and the Ending theme song is "Yume Sekai" (Dream World) by Haruka Tomatsu.
On 6 November 2022 starts VRMMORPG ( Virtual Reality Massively Multiplayer Online Role-Playing Game ) Sword Art Online (SAO), whose special feature is that players fully in the virtual reality of a medieval fantasy world called Aincrad and by simulating all the senses the imagination has to actually live in this. This happens in that the player has a NerveGear specified device that can read directly the sensory and motor areas in the brain and stimulate.
