Every fragment of everyone's memory will be ruthlessly sealed into the black box of time by the dust of time. No matter how long you have sealed it deliberately or accidentally, when the correct key enters the correct password for all the locks, the story composed of those times, places and characters will flood your world again. Reel after reel is arranged in sequence, and fragments of scenes pop up. Some people will raise the corners of their mouths, which is called happiness; some people will fist their chins, which is called warmth; some people will be depressed, which is called moved; some people will overflow with tears, which is called sad; some people will pray to the stars, which is called thinking; some people will frown, which is called powerlessness...