The Sekirei Plan , known to Minaka and others as the "Game", is a competition in which the Sekirei and their Ashikabi must fight for survival until the last one of each remains.

The full 28-minute version of the OVA was released with the first BD/DVD volume of the second season on August 25, 2010.

As with the first season, Pure Engagement is licensed in North America by Funimation, four new characters were created by Alchemist consisting of two Sekirei, one Ashikabi and a baby as video game-only characters.

The manga was serialized in Square Enix's seinen magazine Young Gangan between December 2004 and August 2015.

A sequel to the manga will begin serialization in the same magazine in May 2017.

If an Ashikabi dies, all Sekirei winged by him or her will also perish.

Jinki Upon all Sekirei being winged, the MBI puts all Jinki in their possession as prizes for the matches of the Third Stage, and only the Ashikabi with a Jinki are allowed to keep participating in the Sekirei Fight by the end of the stage.Minato soon learns that she is a "Sekirei" who chose him as her "Ashikabi", one of the mysterious set of humans that have the genetic trait who can make a contract - by kissing - with the Sekirei.This binds the Sekirei to him and allows them to use their full power in elimination battles with other Sekirei.The adjustments had been used not only for making Sekirei stronger, but also for controlling and strengthening their power. Sekirei that are under the same Ashikabi can also merge their techniques in order to create more powerful techniques.This puts most Ashikabi at a disadvantage, as only a few Ashikabi possess more than one Sekirei.The second anime season ended with the Second Stage completed, but before the Third Stage matches begin.