ソードアート・オンライン プログレッシブ 黄金律のカノン

The SAO: Progressive series continues, following Asuna and Kirito to the sixth floor of Aincrad, where puzzles and brainteasers galore await them! Will our sword swinging pair burn out on a mental challenge, or will the frightening gang of player-killers catch up with them first…? (Source: Yen Press)