Ooyama Takeru, a young normal yet perverted minded guy, got accepted and now goes to a school that, unknown to him, was where combat and magic is used. On the first day, he meets again after three years: Amaya Haruko, his childhood friend, Kushiya Inaho, a girl who says she`s his fiance, and Himegami Kodama, a blonde who wants to kill him. Finding out that there are many girls there that just don`t like him, he is told that everyone there uses a special magic ability while using an item or weapon called a Maken.
The 'prison survival action' story is set after the sudden emergence of special powers in certain pockets of humanity. To deal with these so-called 'Altered,' a mysterious remote island prison named 'Area D' was built.
Sekirei are 108 beautiful ladies of unknown origin, who together with their Ashikabi (human partners), must battle with one another in order to determine who will ascend and claim the 'prize.' What is the larger purpose of this event? What are the plans of the event's overseer, the same individual who found these Sekirei and introduced them into society?
Towards the end of the 19th century, Allen Walker officially joins the organization of Exorcists that destroy the beings known as Akuma; mechanic weapons made by the Millennium Earl with the suffering souls of the dead. Allen has both a cursed eye and an anti-Akuma weapon as an arm, bearing the power of 'Innocence,' a gift given to him as an apostle of God. Allen, along with his fellow Exorcists must put a stop to the Millennium Earl's ultimate plot that could lead to the destruction of the world and all who live on it.