This story is a story I have conceived for a long time in high school, but due to various reasons it was not presented in time. Recently, I had a sudden feeling, so I wanted to write it down. It has many meanings, and I have no intention of listing them. Please take a look for yourselves. If you have any thoughts, please feel free to communicate with me. In addition, time has changed, and different directions will be different when written. The ending is undecided. Please give me your advice.