Kamen Rider Eternal (仮面ライダーエターナル Kamen Raidā Etānaru) is the second installment of Kamen Rider W Returns (仮面ライダーＷ（ダブル） RETURNS Kamen Raidā Daburu Ritānzu), a set of two V-Cinema (direct-to-video) releases that each serve as a spin-off of a character from Kamen Rider W. Released on July 21, 2011 (with rentals out on July 8), Kamen Rider Eternal is primarily a flashback story set before the events of Kamen Rider W Forever: A to Z/The Gaia Memories of Fate and focuses on the eponymous Kamen Rider, Katsumi Daido.