On August 9, 2023, the first volume of the book was published by DRE Novels. On October 23, 2023, the main story concluded. In the small kingdom of Hassenveria with a population of about 50,000, a young man named Slayn, who grew up as an ordinary citizen, suddenly learns that he is the illegitimate son of King Fredrick Hassenveria. Furthermore, due to an unfortunate accident at the royal castle, all the royal family members die, leaving Slayn as the only direct descendant of the king, and he is chosen as the next king. Despite being in a completely unfamiliar situation, Slayn gradually strengthens his resolve and develops his talents, becoming a king. In the complex world situation where small and large countries coexist, he moves forward to protect and enrich his homeland. Note: The story gradually becomes more exciting from the latter half of the first chapter, transitioning from internal affairs to a war-focused narrative. The story is also published on Kakuyomu.