Neither this world, nor this time.
In the middle of the sixth century of the Xiluo calendar, under the influence of magical technology, humanity entered a prosperous golden age. The Persian Empire, a powerful nation along the continent's trade routes, also flourished under the rule of its sovereign, Baham II. The rebels who had disturbed the empire's final days of peace were on the verge of being wiped out. No one knew that the eighth prince, Koslau Abbas Shierou Kexide, only 17 years old and already making a name for himself in this war, would be drawn into a series of events that would forever change his own fate and the fate of the world...