The apex of magic was the 9th Circle, a dimension believed to belong to a demigod. The ultimate key to accessing it was the heart of the Crimson Dragon, Valdrova. "I never expected my own fiancé would come to end my life." Yet for some unknown reason, Valdrova surrendered her heart without any form of resistance. "…What is this sensation? Why does it leave such a sour taste in my mouth?" Then I confronted it—a despair that was much older and deeper than the animosity I had harbored.