Junior high school students run away from time and space, thinking that they can at least control their own lives. In the end, they find that they are more like a wind-up music box. Once it is turned on, you have to play all the music in your life! The first stop is the future world, looking for the mark left by his father.
Concept: Looking at the adult world from the perspective of junior high school students, science fiction is the reality of the future