Tatsuya and Miyuki are having not the best of times. Not only did everyone find out that they belong to the Yotsuba family—one of the most mysterious, powerful, and frightening magical families—but everyone was also shocked to learn that they are not siblings and that they’re even engaged! A chain of revelations caused their classmates to grow openly distant from them, including close friends. Meanwhile, the regular meeting of the ten main clans is about to take place, meant to resolve many important matters in the magical world. And this is the perfect opportunity for the mysterious puppeteer to strike yet another terrorist blow…