"Hey, you said you wanted a little sister, right?"... more>>
First year highschool student, Toujo Basara, was suddenly asked this question by his father, and he fell into a state of panic. On top of that, the eccentric father told him that he will be getting remarried. He then departed overseas after bringing Basara two beautiful step-sisters.
But Mio and Maria's true forms are actually a newbie Demon Lord and a succubus!? Basara was almost forced into a master and servant contract with Mio, but a "reversed" contract was formed by mistake, and Basara is now the master!? Moreover, Basara is being hit by ecchi situations one after another due to the contract, but Mio's life is being pursued by other demon tribes and hero tribes!!
The most powerful contractor's desire action drama begins!
In the year 20XX --- seven seraphim suddenly descended upon the city of Kichijouji. Then, within a several kilometre radius of Inogashira Park, a certain phenomenon occurred. People began to obtain special abilities one after the other. The seraphim then caused an immensely tall structure to appear within the park, and they disappeared into it. The Japanese Government repeatedly failed to establish contact with the seraphim. The seraphim did not respond to any calls, they did not show their appearances, and they didn’t even make any statements. Although confusion ensued at first, the special powers that people acquired turned out to be usable only within that particular area.... more>>
In Kichijouji City, more and more people from all walks of life and with different kinds of abilities came in to join the overflowing crowd. And so --- several years had passed since the advent of the seraphim, and special abilities had now become commonplace. Kichijouji continues to reign as the number one city that young people want to live in.
Summoned into an alternate world of Alayzard, Ousawa Akatsuki helps defeat the demon lord, brings harmony back into the world and, under the demon lord’s last request, takes the demon’s only daughter back into Akatsuki’s own world. ... more>>
It turns out that being teleported into a different world is somewhat of a common occurrence back home. Those who return often come back with the power to use magic. So a worldwide organization, fearing people like Akatsuki, created Babel, a school to teach and keep tabs on the magic users.
Akatsuki is able to bring the demon lord’s only daughter into Babel as his sister, Ousawa Miu. A new chapter for Akatsuki is about to begin--this time, in his own universe! [vyc]