The mysterious group that attacked the Ocean Turtle turns out to be a secret unit under orders from the U.S. National Security Agency. And its leader, Gabriel, has battled Kirito and Sinon before.

Cast: Yoshitsugu Matsuoka, Haruka Tomatsu, Kanae Itô, Ayana Taketatsu, Miyuki Sawashiro, Rina Hidaka, Ayahi Takagaki, Hiroaki Hirata, Toshiyuki Morikawa, Kenji Nojima, Sanae Kobayashi, Ayako Kawasumi, Akira Ishida, Tsuyoshi Koyama, Isshin Chiba