12-ji no Kenryokusha

Koyuki works at a tavern in the port city of Salim when she is rescued from a feudal lord by two twin princes. The older prince, calm and composed, and the younger, more carefree, extend an invitation to the palace. There, Koyuki starts to uncover the Empire's hidden truths and her own role in its future. The story is centered on the legends of the desert empire Orchis.