This is not just a game; it's a matter of life and death.

In the mysterious next-generation MMO, Sword Art Online (SAO), players find themselves trapped until the game is cleared. If you lose, it means real death. Unaware of this harsh reality, around ten thousand users log in, only to be caught in a deadly battle for survival.

The protagonist, Kirito, is one of these players. Quickly accepting the truth of this MMO, he stands out as a solo player in the vast floating castle of Aincrad. His goal is to reach the top floor, the only way to clear the game.

However, his solitary quest is interrupted by Asuna, a master of the rapier and a fierce female warrior, who insists on teaming up with him. This fateful encounter sets Kirito on a path that might change his destiny forever.

Will Kirito manage to escape this virtual prison?