Sword Art Online - Season 4 Episode 16 Code 871
The traitor inside Rath turns out to be a researcher named Yanai. When Higa attempts to restore Kirito, Yanai tries to thwart the operation by holding him at gunpoint. Meanwhile, in the Underworld, Sinon confronts Gabriel, who has logged back in.
- Genre: Animation, Sci-Fi & Fantasy, Action & Adventure
- Studio: Gunma TV, Tokyo MX, tvk, BS11, Tochigi TV
- Keyword: artificial intelligence (a.i.), magic, fairy, virtual reality, friendship, sword fight, romance, survival, game, alternate reality, angst, anime, mmorpg, virtual world
- Cast: Yoshitsugu Matsuoka, Haruka Tomatsu, Hiroaki Hirata, Ai Kayano, Rina Hidaka, Hiroki Yasumoto