Episode 0, consisting of two subepisodes: "Sekirei Shindan" (鶺鴒診断) and "Sekirei Yoka" (鶺鴒余暇), of Sekirei: Pure Engagement included on the first DVD/BD...[ More ]
Animoon is the best site to watch Sekirei: Pure Engagement Episode 0 SUB online, or you can even watch Sekirei: Pure Engagement Episode 0 DUB in HD quality. You can also find Seven-Arcs anime on Animoon website.