This is a fantastic and weird childhood story told to me by my grandfather who was about to die from stomach cancer. Of course, my grandfather told me that it was all true. It seems absurd and weird, but it also seems to bring me in. You can point at my nose like a scientist and say that there are ghosts in the world, which is pure nonsense. You can also raise your fists with both hands and tell others that we must believe in science, and we are atheists. But there are many things that you cannot explain with science. Please respect everyone's fantasy of their own beautiful childhood. So I hope that at the end of a tiring day, you can put aside the complexity of work and the noise of the city, quietly return to your childhood with me, and listen to my grandfather's stories.