Sword Art Online 2: Part 4 (Blu-ray)
Hearing rumors about an undefeated player known as Zekken, Asuna decides to mount a challenge. Zekken has been seeking opponents , and not a single challenger has been successful so far. Asuna comes very close and is barely defeated. To her surprise, Zekken asks Asuna to join the guild called Sleeping Knights. What is Zekkens real intention?