DVD release from AKB48 featuring 100 songs selected from 421 songs sung by AKB48, SKE48, NMB48, and SDN48, which were performed at the event "Request Hour Set List Best 100 2012" held at TOKYO DOME CITY HALL from January 19 to 22, 2012. Comes with 5 photos randomly selected from 20 kinds, BEST100 Countdown Book (Size: B5 / 148 pages), and a bonus DVD with making-of. Cover photo features "Kodoku na Runner" costume (subject to change).