Sword Art Online: Extra Edition is a 2013 English-language Animation Action film. Kirito and some of his new friends look back at the events of season one. Kirito recalls his defining moments while Suguha learns to swim with the help of Asuna and other girls who fought alongside Kirito. Sword art online: extra edition features Yoshitsugu Matsuoka, Haruka Tomatsu, Ayana Taketatsu, Kanae Itô, Rina Hidaka, Ayahi Takagaki and Kôichi Yamadera. It was released on 31st December 2013.