2009年10月6日発売「『今日の5の2』宝箱」に封入のOAD。テレビアニメ版のキャスト・スタッフが再結集して製作された『今日の5の2 放課後』全4話を収録したほか、『みなみけ』とのコラボレーションしたボイスドラマが同梱されている。
Ashran the necromancer has taken power in Idhún and enabled the reign of terror of the flying serpents. The first battle for Idhún's freedom will take place on Earth, where Jack and Victoria fight to stop Kirtash, the assassin sent by Ashran to destroy the Idhudites who flew from his tyranny.-微博@摆渡字幕组 整理
This popular animated television cartoon featured two Stone Age families, the Flintstones and their neighbors, the Rubbles. Much of the humor was based on its comic portrayals of modern conveniences, reinterpreted using Stone Age 'technology.' Most notably were their cars, complete with absence of floorboards to allow them to be 'foot-powered.'
