* Based on a light novel series by Kawahara Reki, with illustrations by Hima.Reverberation — At Umesato Junior High Kuroyuki calls for a student council meeting, due to certain incidents happening on the school network: Students are being trapped in the network after school and their avatar`s clothes and items are stripped. Apparently these are the acts of a skilled hacker. Now it is up to Kuroyuki, Chiyuri, Haruyuki and Takumu to set a trap and catch the culprit.Vacation — Haruyuki`s eating habits are getting the better of him. He desperately needs to shape up in two weeks, to avoid the school`s mandatory health-improvement program. Failing to do so would mean he could no longer participate in the territory battles. Thus Chiyuri decides to enforce Haruyuki`s brutal fitness regime… since that fails, a visit to a hot springs to improve physical constitution with mixed-gender bath is Haruyuki`s last hope.— written by foo2Note: The first and second episodes were bundled with the limited editions of the Accel World: Ginyoku no Kakusei and Accel World: Kasoku no Chouten games, respectively. The OVAs came with a Blu-ray Disc for the PS3 versions of the games, and with a DVD for the PSP versions.
- Other Title: Accel World EX, Accel World OVA, Accel World: Reverberation, Accel World: Ginyoku no Kakusei, Accel World: Kasoku no Chouten, アクセル・ワールド EX
- Status: Completed
- Sub/Dub: Anime Sub
- Anime Type: OVA
- Genres: Action, Romance, School, Sci-Fi, Shounen, Video Game, Comedy, Ecchi, Game, Seinen
- Characters: Arita, Haruyuki, Kurashima, Chiyuri, Kuroyukihime, Mayuzumi, Takumu
- Score: 7.1
- Rank: 3577
- Popularity: 1767