Crazy plane crossing in different time and space

The conspiracy of the Shatterer Demon Clan, the defense of the Ironwall Fortress, the Three Entrances to Hell, and the sealing of the Dark Portal are all needless to say. What we want to talk about is the heroic deeds he left behind after sealing the Dark Portal.

After the Dark Portal was sealed, the continent welcomed a precious peace. While healing the wounds of war, various countries sought development. Ten years could allow a child to grow into an adult, and it could also make a country stronger. At the same time, it could also make a person’s ambition swell.

It was a small country near the center of the continent. Now, it was only known that this country appeared after the last demon invasion. The specific name was unknown. Its monarch was not satisfied with the identity and status of a small country. He hoped that his country could be as powerful as the three empires, but he did not have the chance.

"Since the last demon invasion allowed me to become king, then as long as the demons invade again, my country will advance, right?