Fairies are the purest beings in the world. At least, that's what they believe.
They come and go without a trace, mysterious and elusive, appearing unexpectedly and vanishing just as suddenly. But one day, they realized that they were spending less and less time in the real world. Worse, the longer they stayed, the more corrupted they became.
Was the polluted world contaminating the fairies?
Had the fairy race reached the end of its lifespan?
Humans invented [Repatriation] to help these purest of beings return to their homeland.
The world continued to turn according to its own laws, just as it always had.
Even when things changed, they knew nothing about it.
