Each social zone was modeled on one of the worlds that were discovered with the gates. Sector 4 reminds one of the Kemono world, so the buildings seemed more animal-friendly in nature. Doghouses, treehouses with nests, scratching posts for street lamps and so on. Likewise, the establishments are staffed with either actual kemonomimi or the ani-wannabes of the world, wearing fake ears and tails, the latter always willing to ask for helpful hints from their real animal friends.