Gunnm: Kikoujutsu Senki

From Comic Days:
Austad, one of the Four Elders of Panzerkunst, plots the unification of Mars and the restoration of the Great Martian Empire, Mawors. Having finally stepped through the gates of Panzerkunst, Yoko and Erika find themselves living through an era of turbulent storms that engulf the entire solar system.

[Official Japanese](https://comic-days.com/episode/12207421983615484271)