Their fathers are business partners, collaborating on an integrated school to keep the things they want to protect the most, from getting too suspicious. Even if it means putting them closer to the danger. Of course since their parents run the place, they're going to be the face of the set up. Therefore the two have no choice but to interact with one another. But she's adopted and human, and just as oblivious as the outsiders. But him? He's not so human. And try as she might to refuse him, she can't help herself and he ends up bringing out something in her that's not so human.