Hayao Miyazaki’s manga Nausicaä of the Valley of the Wind (Kaze no Tani no Naushika) is a post-apocalyptic science fantasy. It was serialized in Animagefrom February 1982 to March 1994.
A thousand years after the Seven Days of Fire, declining human populations cling to existence in those few regions that are still habitable for humans. Much of the Earth’s land surface is covered in thriving ecosystems, but … all these systems — the so-called Sea of Corruption — feature “miasma,” a toxic fog lethal to unprotected humans.
The Valley of the Wind is lucky. Continual winds keep the miasma at bay, protecting the Valley’s inhabitants. Life is still harsh and short but compared to elsewhere, it is paradise.
Unfortunately for the Valley of the Wind, it is a vassal state of the Vai Emperor of the Torumekians.