Yuto works for the International Committee for Migration in a country where therions (animals with human-like features) and humans live in harmony. One day, he is assigned to take care of a young boy rescued from a nearby country that had just ended a war between therions and the humans who were oppressing them. When he first meets Lyco, Yuto is surprised by how guarded he is, although it's clear the boy is burdened with a painful past...