本片是一部Animation片，由Tomohiko Ito导演，由Yoshitsugu Matsuoka/Haruka Tomatsu/Kanae Itou主演。
剧情简介：A special recap of the first season with an original story in which Kirito and the others decide to go on an underwater mission so that Yui can see a whale, but they face a shocking revelation... Suguha is afraid of water. So Asuna and the other girls decide to teach Suguha how to swim. Meanwhile, Kirito is meeting somebody.
外文名：ソードアート・オンライン Extra Edition
类型：Animation / Fantasy / Adventure
导演：Tomohiko Ito
演员：Yoshitsugu Matsuoka / Haruka Tomatsu / Kanae Itou / Ayana Taketatsu / Rina Hidaka / Ayahi Takagaki / Hiroki Yasumoto / Hiroaki Hirata / Toshiyuki Morikawa / View More
