Nightmare (Grandson of Slippery Ghost)

Please summarize it in one sentence: The love story of a miko and an onmyoji. Lyrical copy: The so-called destiny is not to meet in such a beautiful way, It's not how well matched we are in the eyes of others, Rather, when we interlock our fingers, we know that we will hold hands with each other until we grow old. Even though our hair is graying and our appearance is getting older, we can still look at each other and smile. Dialogue version copy: Huizi: The flowers are blooming, Xiuyuan, please reach out. He stretched out his hand, and she gently wrote a few words on his palm. Hyeko: What did I just write? Huakaiyuan Xiuyuan smiled: I like you. Huizi curled her lips: I like you too. Conception: