She was their little tail, and she followed him wherever he went. He was used to her company, just like he was used to the existence of shadows.
But one day, his little shadow disappeared.
A few years later, his little shadow came back, with bright eyes and white teeth, and a slim figure. He decided not to let go. But in the end, he can't compete with the impermanence of the world. He just wants her to be happy, nothing more. So, why not let go?