Name: Rakuin no Monshou(烙印の紋章)
Author: Tomonori Sugihara (杉原智則) (also the author of Eureka 7)
Status: not translated
Volumes : 11 (likely to end by volume 12)
A very detailed and explicit review on BT BlogAfter a long decades of war, peace was established between the two empire by marrying of the Empire's prince Gill Mefiusu to Gerbera's princess Birina Awel. But before the two could meet, Gill was killed.
Oruba is a sword-slave war orphan who happened to be a split-image of Gill Mefiusu. An anti-empire faction leader Fedomu learned about him and decided to use him as the prince's double. Oruba accept it as a chance to revenge the empire that killed his mother and burned his village...
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