Rutile Quartz no Taikan: Ou no Tanjou  

The Crown of Rutile Quartz, Crowned Rutilequartz, ルチルクォーツの戴冠 -王の誕生-

In the modest Kingdom of Hasenvalia resides a man named Slaine who believes he is a simple commoner. However, his life takes a dramatic turn when the royal family perishes in a palace fire, revealing that he is actually the illegitimate son of the king. With no prior knowledge or experience, Slaine must now ascend the throne. Despite these challenges, his quick thinking, commitment, and the assistance of his aide-de-camp, Monica, enable him to excel. Just as his coronation approaches, Galed, a powerful empire, declares war on Hasenvalia. Faced with this formidable enemy, Slaine must decide whether to flee into exile or stand firm against invasion. As he navigates the complex web of political interests among neighboring nations, Slaine must learn how to mature into his role as king. Prepare for the rise of a monarch!

Rutile Quartz no Taikan: Ou no Tanjou has been published digitally in English as The Crown of Rutile Quartz by J-Novel Club since December 19, 2023.