Sekirei: Pure Engagement Episode 0
Sekirei 2 Special
Kanwanidai (Sekirei Shindan/Sekirei Yoka)
セキレイ～Pure Engagement～第零羽
Episode 0 "Kanwanidai (two subepisodes: Sekirei Shindan & Sekirei Yoka)" of Sekirei ~Pure Engagement~ released on the first DVD and BD volume.
