The rising star over the Fallen Isekai Empire

109 years have passed since the 200-year-long war. The world of Harusaka has now started to rebuild itself from ashes. But one mighty empire was hungry for power, more than anyone, they opened a portal connecting them with the outsiders. Eagerly for even more power, they start yet another endless war but this time their enemy is much stronger than they expect. They know nothing about their enemy at all.

The United States of America is coming for them.