What to read after How a Realist Hero Rebuilt the Kingdom: Volume 2?

When Souma Kazuya was summoned to another world to become a hero, he didn't go on an adventure, he became the king of Elfrieden and took to governing instead. Using knowledge from his old world, Souma began to push forward reforms every day, but eventually there came a time when he would have to face the general of the army, Georg Carmine, who refused to soften his rebellious stance. When the plans of the neighboring Principality of Amidonia get involved, things move from the political arena to the military one. "Now, let the subjugation war begin!" Will Souma be able to safely bring this war to a conclusion?! This amazing transferred-to-another-world internal-politics fantasy series is on its second volume!