Urban Soul Song

Have you ever thought about what if there were an intelligent creature that lived so long that it lost all awareness of time, what would they want? Presumably, it is not money and fame, these things will gradually dim in the first thousand years after the birth of those creatures. What they want must be something new and ever-changing, such as an unprecedented ideal, or a love that moves the world. In another world, the universe has consciousness and has become the oldest life. So the humans in that world will compose music in their floating lives, casting songs with their souls in exchange for the power called soul songs...