Japan has become a wasteland devastated by the Rusty Wind which causes all things to rust away. A suspicious looking priest visits a checkpoint all alone, yet on his back rests a bow priests wouldn't use.
Meanwhile, Milo, a doctor running a clinic in the town of Imihama, is researching new medicines in secret in order to save his older sister, Pawoo, who's being corroded by the Rust. But that day a stranger appears before him...
Please try to avoid going outside 
the walls as much as possible.
من فضلك حاول تجنّب الخروج من الجدران قدر المستطاع
Sie sollten es vermeiden,
die Mauer zu verlassen.
Procuren no salir de la muralla.
Intentad no salir de la muralla.
Évitez d’aller
de l’autre côté du mur.
Cercate di non uscire dalle mura 
per quanto possibile.
Por favor, tentem não sair 
muito pra fora dos muros.
Вам лучше поскорее выбраться за стену.