各勢力による小競り合いはあるものの、王たちの円卓会議で選ばれた「盟王」により、各地の力関係はバランスを保っていた。しかし、そんなある日、ユグドに暗黒の魔物「黒の軍勢」が現れる。監督は「劇場版BLEACH ブリーチ」でキャラクターデザインや作画監督を務めた工藤昌史。アニメーション制作は「ルパン三世」のテレコム・アニメーションフィルムと「楽園追放 Expelled from Paradise」を手がけたグラフィニカ。
Elya, 20, is a student and a future ecologist. One day, Matvey, the head of a construction company, came to her university to discuss the development plan for an old forest park. Elya did not hesitate to crush his project. Matvey is very interested in girls' confidence, And used his usual influence method - he just tried to ; purchase She, but Elya doesn't need a sponsor. Then, Matvey was surprised by her indestructibility and placed a bet on Elya: romantic seven days according to his rules. If the girl still decides to leave after that, he will refuse to build a skyscraper in the forest park. When Matvey really paused design work, she agreed. Elya thinks she's a bit like the movie 'Beautiful Woman' The female protagonist in, but it turns out that Matvey is not the person she imagined.