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...
I appreciate the sentiment, but my 
sister's waiting for me at home.
أقدّر هذه المشاعر، لكن أختي تنتظرني في المنزل
Ich bin ja geschmeichelt,
Gracias, pero me voy.
Gracias, pero me voy.
Je vous remercie,
mais ma sœur m’attend à la maison.
Apprezzo molto l'offerta,
Fico feliz pela intenção, mas minha 
irmã tá me esperando em casa.
Я, конечно, рад предложению,