The 10th anniversary of Kamen Rider OOO will be celebrated this weekend with events on YouTube and Twitter.
Toei has made an initial announcement about the celebration of the 10th anniversary of Kamen Rider OOO beginning with free distribution of the full series on Toei’s Japanese YouTube channel. Starting on September 5th, all 48 region-locked episodes of the series will be made available at once, timing out at about 20 straight hours of content. Additionally, video messages from Shu Watanabe (Eiji Hino), Ryosuke Miura (Ankh) and Riho Takada (Hina Izumi) will be shown with other videos to come. Over on Twitter, a hashtag campaign will be held on the official Kamen Rider Twitter account to advertise new Kamen Rider OOO merchandise that will be announced.
Kamen Rider OOO, which first aired in the fall of 2010, follows Eiji Hino, a young man with no worries aside from having a clean pair of boxers for tomorrow. After being recruited by the disembodied arm of Ankh , Eiji becomes OOO to fight against the ancient monsters known as Greeed, who feed off of human desires. Along the way, Eiji and Ankh are assisted by members of the Kougami Foundation, who have found a way to weaponize the Greeed’s powerful medal technology.
Source: Kamen Rider Official Site