Sword Art Online Light Novel Volume 12

The twelfth volume in the Sword Art Online Light novel series and the fourth installment of the Alicization arc.

Summary of the previous novel
Eugeo finally met with the girl he has been chasing since youth, Alice. However, that Alice has no trace of her past self — the time when she was in «Rulid village». Alice was there to arrest Kirito and Eugeo, who broke the Taboo Index. She had none of her childhood memories and introduced herself as an «Integrity Knight».

Kirito and Eugeo were chained in the underground jail of the «Axiom Church», the «Central Cathedral», but they escaped thanks to Kirito’s cleverness. With some assistance from a mysterious young girl, Cardinal, who, as Kirito realized, was the Cardinal System that comes with The Seed package. The pair now aim for the tower’s summit to return Alice to her «original self».