Tomoya Okazaki is a cynical delinquent who lacks ambition as he apathetically labors through high school. During his childhood, a tragedy had caused his father to seek solace in alcoholism and neglect his son. Yet, meaningful human interaction can be a benediction, as Tomoya learns when he meets the enigmatic Nagisa Furukawa. The odd girl offers a gesture of friendship to Tomoya, but he rejects the request, dismissing it as a trivial incident. However, as he soon realizes that he is encountering Nagisa more and more often during school, Tomoya drops his discompassions and befriends the girl. When he learns that Nagisa's dream is to revive the Drama Club, Tomoya decides to shed his detachment from the ordinary pleasures of life and dedicate himself to helping his new friend achieve her ambition. But what starts as a simple friendship may progress into something far more deep, intimate, and life-changing. As the pair face various hardships and afflictions, Tomoya and Nagisa gradually come to terms with the challenges of life. [Written by MAL Rewrite]

In a world where dead people turn into books and are stored in the Bantorra Library where anyone who reads a book can learn their past, Bantorra Library is maintained by Armed Librarians who wield psychic powers and their enemy is a religious society known as Sindeki Kyoudan.

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 volume.

The cheerful Yuuki Cross and the gruff Zero Kiryuu are members of the disciplinary committee at Cross Academy, which houses two very distinct classes: the Day Class and the Night Class. Their job consists of upholding order between the classes when they switch out. While that may not seem like an especially difficult task, the Day Class is unaware of the truth behind the Night Class—their utterly gorgeous students are vampires. Ten years ago, Yuuki was saved from a vampire attack by Kaname Kuran, a Pureblood vampire. Now, Kaname is the leader of the Night Class, and Yuuki's disciplinary committee position allows her to see him again, making her feelings for him grow complicated. Meanwhile, Zero bears a white-hot hatred of all vampires and believes they can never live in harmony with humans. But a secret from Zero's past soon threatens the fragile peace of all at the academy, and things may never be the same again. [Written by MAL Rewrite]