A goddess of love can't stand seeing people dying over the hanahaki disease anymore over unrequited love, so she gives humanity two gifts: a city that can only be entered by those who have the disease, and a queen who can heal anyone from it. But once you enter the city and are cured, you can never leave, lest the disease come back. While you remain in the city, you can fall in love again with one of the citizens. The queen, however, cannot. As the goddess feared that people would fall in love with the queen only because she cured them. The queen is cursed to never find love of her own, but there's hope. One person may enter the city, even if they don't have the Hanahaki disease. They will be the queen's only love. But if they do not love her back, she will get the disease, and no one can cure her, except them.