Yui wants to see a whale with Kirito during an underwater quest in Alfeim Online. During the quest however, it is revealed Leafa cannot swim. Asuna and the other female characters decide to train Suguha in a real-world pool to help her in ALO. Meanwhile, Kirito meets a certain someone.
- Other Title: Sword Art Online: Extra Edition, S.A.O: Extra Edition, SAO: Extra Edition, ソードアート・オンライン Extra Edition, Sword Art Online Extra Edition
- Status: Completed
- Sub/Dub: Anime Sub
- Anime Type: Special
- Genres: Action, Adventure, Fantasy, Game, Romance, Shounen, Video Game, Ecchi, Magic, Sci-Fi, Seinen
- Characters: Kirigaya, Suguha, Yuuki, Asuna, Kirigaya, Kazuto
- Score: 6.55
- Rank: 6343
- Popularity: 734