Tensai Ouji no Akaji Kokka Saisei Jutsu

When Natra's king falls ill, Prince Wein becomes regent of a small, poor nation surrounded by stronger powers. Everyone sees a political genius capable of saving the kingdom, while Wein's private dream is far simpler: raise Natra's value enough to sell it, then retire comfortably away from the burden of ruling. The problem is that every attempt to gain a modest advantage ends in a much larger victory than he wanted. With sharp-minded Ninym beside him, Wein outmaneuvers generals, nobles, and rulers who mistake his private complaints for calculated confidence. Every success earns more loyalty from his people and makes escape harder. His plan needs a convincing failure, but his talent keeps turning crises into triumphs and a bankrupt kingdom into a power its neighbors cannot ignore.