The End of the World After I Became a Stunning Girl

[Wasteland travel + gender-bender with no male lead + Phoenix-like heroine] Welcome to a broken world! Floating islands shattered across the sky, lands choked by deadly radiation, magnificent churches beyond the clouds, and savage city-states buried beneath the ruins. This is a bizarre and wondrous world where... you can find just about anything! Arcane magic? Steampunk? Or war machines left behind by the old century! In the azure sky, beautiful six-winged birds and airships soar. Across the vast land, mighty two-headed elephants roam alongside the tracks of travelers. But beware! This is no dreamlike fantasy world. The oil dealers and cannibal gangs out at night are not to be trifled with… And try not to provoke those fanatical cultists who are always shouting, “Technology destroyed the world.” Oh, and whatever you do, don’t believe in some utopia where everyone lives in peace and prosperity! Finally, the most important thing of all! Never, ever, ever trust this world, or human nature! Fein had been certain more than once that he really wasn’t dreaming! After the final war, this world’s technology tree had gone completely off the rails! A beautiful goddess told him to go to the edge of the world, beyond the edge, to the Holy Tower that would always lie at the edge of the world. That was his destination. But… Why had he turned into a woman!!