anime Official Website (Japanese) 

The Sekirei Plan (鶺鴒計画, Sekirei Keikaku?), known to Minaka and others as the "Game", is a competition in which Sekirei and Ashikabi fight for survival until the last one remains. Overall, the Sekirei Plan is to have six stages.
maneno muhimu: sekirei, update, shabiki, page, site