Kamen Rider W: Donburi's α/Farewell Beloved Recipe

The Hyper Battle DVD for Kamen Rider W is titled Kamen Rider W Hyper Battle DVD: Donburi's α/Farewell Beloved Recipe (仮面ライダーＷ 超バトルDVD 丼のα／さらば愛しのレシピよ). It features a cooking contest between Ryu Terui, Akiko Narumi, and Shotaro Hidari, in order to best figure out what the contents of the evil Donburi Dopant are, to eventually discover that he is the Oyakodon Dopant. The Hyper Battle DVD features guest stars Hiroshi as the OmuriFu Shop's Master Izo Aida (相田 伊三), Reina Fujie of AKB48 as his daughter Eriko Aida (相田 エリコ), and Shinichiro Ohta of Iron Chef fame as the voice of the Frog Pod who comments throughout the cooking contest (Ōta also served as the narrator in GoGo Sentai Boukenger).

Story
A mysterious Dopant only known as the Donburi Dopant appears. Philip discovers that the only way to defeat it is to find out what kind of donburi meal it is filled with. The Narumi Detective Agency cook different original donburi meals, the "Hard-Boiledon" (ハードボイル丼) by Shotaro, the "Acceldon" (アクセル丼) by Ryu, and the "Doubledon" (ダブル丼) by Akiko, with Philip being the judge of the contest to discover what is inside the Dopant. The donburi filling is eventually identified as oyakodon, thus making Shotaro the contest's winner and identifying the Dopant as the Oyakodon Dopant.