Entertainment company Bandai Namco Filmworks announced a new anime special for the Echoes of Aincrad: Sword Art Online game on Friday, revealing the cast members, staff, a teaser visual (pictured right) and a trailer. Subtitled Unanswered//butterfly, the special will be included with the ultimate and premium editions of the game, which launches July 9, and will also have a promotional screening event in Japan on May 9. Cast Emirun: Tomoyo Kurosawa (Akudama Drive) Rex: Kouki Uchiyama (Horimiya) K...