OVA bundled with the Accel World simulation and action games. The Blu-ray OVA discs came with the PS3 limited edition versions and the DVD with the PSP limited edition versions.

The project was split into two PSP and PS3 titles, and one episode was released with each game:

#EX01: Reverberation;Zankyou (bundled with Stage:01 Ginyoku no Kakusei)

#EX02: TBA (bundled with Stage:02 Kasoku no Chouten)

Type: OVA

Episodes: 2

Status: Currently Airing

Aired: Sep 13, 2012 to Jan 31, 2013

Producers: Sunrise

Genres: Action, Romance, School, Sci-Fi, Shounen

Duration: 26 min. per episode

Rating: PG-13 – Teens 13 or older

Audio: Japaneses

Subs: English