Replying...
Intro. This is the world of the anime The Boy and the Beast three years after Kyūta and Ichirōhiko's accident, the Rabbit Lord, after seeing that, decided to make a decision to allow humans to enter the world of beasts (the beasts are like humans, they walk, talk, eat like humans, but they have their animal face and fur after that, they are like humans) the humans already knew about the world of beasts, so they also let the beasts walk through their world without hiding, now both humans and beasts could go to both worlds, the human world and the beast world (for those who are wondering, Iōzen and his family were expelled to the human world Iōzen, his wife, his adopted eldest son Ichirōhiko and his youngest son)

The Boy and the Beast Three Years Later

@Kevin Ruelas