The Underworld is invaded by 20,000 foreign players who show no mercy to the Human Empire or the Dark Territory. Asuna, Alice, Bercouli, Renly, and Sheyta try to fight back against the overwhelming odds. Meanwhile, Gabriel Miller, the Dark Lord Vector, sees Alice and decides to capture her. He hijacks a dragon from a Dark Knight and flies in her direction. Iskahn, the leader of the Pugilists, is enraged by the massacre of his people, who are unable to defend themselves due to the system's restrictions. He breaks free from the Code 871 seal by tearing out his own right eye and crushing it. With a fierce resolve and a leap of faith, he crosses the ravine with the help of his loyal deputy.
Iskahn, the leader of the Pugilists, agrees to ally with Asuna and the Human Empire Army in exchange for her promise to construct a bridge that would allow his people to cross the chasm. Meanwhile, Alice, eager to end the war quickly, flies ahead of the other Integrity Knights, only to be ambushed and captured by Emperor Vector, who mounts his dark dragon and heads for the World's End Altar. Bercouli, the oldest and strongest of the knights, follows them on his own dragon, determined to rescue Alice. The rest of the decoy force continues their advance, unaware that Critter has launched another wave of 20,000 American players to surround them. Vassago, who had previously fought Kirito and Asuna, decides to join the battle again using a "special" account that he had prepared. As the situation becomes desperate for the decoy force, a bright light descends from the sky. It is Sinon, who has logged in using the superaccount of Solus, the Sun Goddess. She unleashes her power and annihilates the American players.
Cordial Chords (2017, OS BD/DVD) - Distant Journey (2019, Alicization BD/DVD Vol.1) - If We Could Walk Together (2020, Alicization WoU BD/DVD Vol.8) - If You Were Here (2019, Alicization BD/DVD Vol.8) - If You Wish It (2020, Alicization WoU BD/DVD Vol.2) - Rainbow Bridge (2014, Extra Edition BD/DVD) - Sugary Days (2015, Season 2 BD/DVD Vol.5) - Sisters' Prayer (2015, Season 2 BD/DVD Vol.9) - The Day After (2013, Season 1 BD/DVD Vol.9) - The Day Before (2012, Season 1 BD/DVD Vol.1)
Girl Meets Gun ~P90 ni tsuite Yoku wakaru Online (PYO)~ (2018, P-90 Airsoft Gun bonus) - Her step, step (2019, ReoNa's Prologue Album) - Minami no Island Online (MIO) (2018, Dengeki Island!) - MZO (2016, Dengeki Splash) - Pitohui, Elsa, and a Fine Day for Handguns (2021, AM.45 Airsoft Gun) - Sugoimizugi Jam (2015, Dengeki Girls Swim Wear Festival) - The Untold Tale of the Vorpal Bunny's Birth ~Otherwise Known as the Worries of Two Gun Nuts~ (2020, Vorpal Bunny Airsoft Gun bonus)
Idle Talk - The Shinobi's Reckless Remarks (2017, Dengeki Bunko Magazine Animate bonus) - The Story of the Matchmaking Bakeneko (2016, Clover's Regret Vol.1 Animate bonus) - The Strange Tale of Makuwa Melons (2016, Clover's Regret Vol.1 Melonbooks bonus)
Melodies Go Beyond the Forgetting Curve... - The Grand Plan for a Summer Festival Performance! - The Grand Plan to Overcoming Picky-Eating! - When Asuna and Yuuki Changed into Swimsuits (2015)
Ichiban Kuji Ordinal Scale
A Brief Instant of Reminiscing Right Below the Concert - From Asuna's Diary on a Certain Day in Late April (2017)
SAO x KYOTO NIPPON FESTIVAL
The Great Barrier of the Old Capital of Kyoto (2019)