Two months have passed since the deadly game began, and Kirito and Asuna continue to make progress. They stop for treasure, but then they must face Asuna's least favorite monster.

High school student Asuna struggles to survive with a young swordsman after its revealed that she is trapped inside the game of Sword Art Online, where if your HP drops to zero, your brain will be destroyed in real life.

Senpai is a nerdy high schooler whose manga work is discovered by some loud girls in the library. They all tease him, but one among them, Nagatoro, takes it further than the others.

Brought together by a mysterious song, a grad student and an engineer lead the fight against an unimaginable force that may spell doom for the world.