Thousands of years ago, her one look back destined that tragedy to happen. On the Demon-Slaying Pillar, the heart-gnawing pain made her finally let go of her obsession. After thousands of years, when she finally learned to be indifferent, her peaceful heart was unexpectedly disturbed by his appearance. "Later, I realized that I was not the only one who was persistent at the beginning." The conflict between the fairy and the demon was only due to the mistake made thousands of years ago. The hibiscus flower he planted for her with all his efforts turned out to be a short-lived flower in troubled times...