The central character of the series is Minato Sahashi, a ronin who has failed his college entrance examinations two years in a row.

His life changes, however, when he meets several women with special powers called "Sekirei" and is dragged into a battle to possibly decide the fate of the world.

The same day of his second failure, Minato meets a girl named Musubi, who literally falls out of the sky on top of him.

Now Minato must find a way to survive both the life-threatening battles of the Sekirei Plan and his partners' fierce competition for him.

The opening theme is "Sekirei" (セキレイ) and the main ending theme is "Dear sweet heart"; both songs are performed by Saori Hayami (#88 Musubi), Marina Inoue (#9 Tsukiumi), Kana Hanazawa (#108 Kusano) and Aya Endo (#2 Matsu).

[19] The sixth DVD volume was supplemented with an original video animation (OVA) episode, "Kusano's First Shopping Trip" (初メテノオツカイ, Hajimete no Otsukai, "The First Errand"), featuring Kusano participating in the shopping race with Musubi and Tsukiumi.

The limited edition of the single came bundled with a special three-minute OVA, classified as episode 0, titled "Two-Topic Gossip" (閑話弐題, Kanwa Ni Dai).

As with the first season, Pure Engagement is licensed in North America by Funimation,[25] and released the series on January 3, 2012.

[29] The limited edition version was bundled with figures of Musubi and Tsukiumi with Kusano in a panda suit, a 40-minute drama CD, and an illustration of Matsu.

[32] The plot centers around the discovery of said baby, who is being pursued by unknown persons after Minato and the Sekirei find her abandoned in the city.