The purple and gold wall cages a world and locks in countless sincere hearts. In the lonely palace, it is rare that only the word "sincerity" can be found. Some people lose it easily, but some people hold on to it for the rest of their lives. Spring is as old as ever, and people are thin and empty. Every year, people look different. When you are in it, it is inevitable that you don't know what day it is. Fortunately, there is a bright moon in the sky and you in the world.