The End of the World, Exiled Immortal, Meteor from Another World

A leaf that was about to wither was falling precariously on the branch. This dead leaf carries the disgust of the world, carries the retreating vitality, wanders leisurely, and finally falls into a caged birdcage. There is "spirit" in the world. It evolved from the human soul and will and is a unique existence that belongs to the individual. It will not reproduce the same appearance just because it is inherited from its parents; but even if two lives are not related by blood, it is still possible to give birth to the same "spirit" based on the trajectory of the soul's will.