A world where energy is scarce and always in darkness, a world where energy capturers, energy controllers, pulse spirits, and Qixie species coexist, the Dudra continent.
Why could a boy who was taken in by a mother-in-law from a slum make the four major clans in Felice City restless and scramble to get him? Who ordered the assassins from Yuanxi Desert to get rid of this boy?
A young man with extraordinary abilities, a dragon-shaped pulse spirit, embarks on a journey to find the answer. Is this powerful force a miracle or a curse? Assassins, gamblers, bounty hunters... What will their adventure be like? What kind of sad past does the girl with the same power as him have from the past to the present? Will Dudra's artificial sun fall because of the prophesied man...