Caravan Kidd Vol 1

From the Dark Horse edition

Acclaimed manga-master Johji Manabe, creator of Outlanders and Drakuun, completes his epic Caravan Kidd saga in this massive 296-page volume. The beautiful warrior Mian Toris confronts her arch-nemesis, Empress Shion, on the homeworld of the Helgebard Empire. If Mian prevails, the Empire will be brought to its knees — and the homeworld of her conscripted sidekick Wataru (who just happens to be in love with Mian) will be destroyed by an even greater stellar menace!

Source: Anime News Network Encyclopedia