Demon Lord 2099: The Complete Omnibus (manga)

Five centuries after his fall, the legendary Demon Lord Veltol returns to finish what he started. However, when he awakes in the year 2099 of the Fused Era, he finds not the familiar lands he conquered, but Shinjuku—a dazzling cyberpunk city-state where magic and technology have intertwined to raise civilization to unprecedented heights. The stories of Demon Lords and Heroes may have been reduced to little more than historical footnotes, with Veltol’s retainers hunted down and scattered to the winds, but make no mistake—this brave new world will be his for the taking!