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...
yet it can never rust 
away that gaze of yours.
مع ذلك لا يمكنها أبداً أن تُزيل نظرتك تلك
Doch einzig deine Augen
kann er nicht verrosten.
eppure non riuscirebbe mai 
ad arrugginire il tuo sguardo.
contudo, ele jamais poderá 
enferrujar o seu olhar.
но твой взгляд — единственное,
что ржавчина не берёт!