"A legend is told across the continent of Zelonia: whenever the world is in danger, a hero summoned by the goddess will come to save everything. But in the year F1206, everything changed. Heroes could now be summoned in huge numbers without paying any price. From then on, the world began to fall into human hands. In F1244, the first prince of the demon nation Tantas accidentally found a baby in the wilderness and named him Tim. Meanwhile, at some unknown moment on a parallel Earth, Tang Yun stood in the middle of a magic circle in a panic. Over the shoulder of a mysterious man, she looked through the shifting light and saw a woman who looked just like her, with half her face corroded away. 'Tang Yun, I will save you...' The man held her tightly and spoke in a trembling voice beside her ear. None of it had a beginning, nor would it ever end. Time and worlds were entwined in a loop, and no one could escape it."