In five short years, Zilbagias has made vast strides in the demonic kingdom. Between his miraculous transformation after visiting the Abyss and his formed contract with the Devil God of Taboo, his acquisition of a high elf pet which gave him access to healing miracles unprecedented among the denizens of the dark, and his remarkable displays of combat prowess, he quickly sets himself apart as a prodigy among the demons. While his unnatural talents have made it difficult to keep his disguise intact, with active duty close at hand, his cover—and his resolve—will soon be tested in brand-new, terrible ways. Luckily, his first excursion is just to clear out a band of goblin deserters. Should be simple enough, right?

The hero Alexander and his comrades unleash a daring raid on the Demon King’s castle, intent on assassinating him and bringing an end to the war against the darkness in one fell swoop. However, the raid goes awry when his party is effortlessly decimated by the Demon King’s overwhelming power. But death is not the end of the road for Alexander, as he is reincarnated two years later as that very same Demon King’s son. With the memories of his past life still intact, he vows to use his miraculous second chance to continue fighting—this time destroying the demonic kingdom from within as the Demon Prince Zilbagias. It doesn’t take long for his mettle to be tested either, as passing as a young demon prince without blowing his cover proves to be quite a bit more challenging than he initially anticipated.

Zilbagias has managed to just barely avoid his identity being revealed by Faravgi’s departed soul. For better or for worse, this has meant revealing his plans to Layla and, in turn, bolstering his relationship with her. At the same time, he has begun making inroads with the lich Enma, her undead being another lynchpin in the demonic kingdom Zilbagias plans to exploit. But, as always, things can only look up for so long before the looming reality crashes down around him—this time in the form of his deployment to the front lines. With the plans all but set in stone, Zilbagias is sent to the Rage family territory to make preparations for his first personal assault on the Panhuman Alliance.

With his training in the Rage family territory complete, Zilbagias returns to the castle to begin his preparations for his deployment to the front lines come spring. And now that he has secured permission to fly with Layla—despite the reluctance of those around him—the possibilities seem endless. But life quickly becomes a dangerous balancing act, as he must fight to secure a strong position within the demonic kingdom while trying to undermine it. He makes great strides weaving alliances with powerful actors throughout the castle that he inevitably aims to betray, but they seem to be keeping their cards close to their chests.