Axe Flennheim inherited his family’s frontier viscount estate after his father was killed during an invasion from a neighboring country. Despite an overwhelming enemy army closing in, Axe remains completely calm. The reason? He possesses memories from his previous life on Earth. Using the knowledge and quick thinking from his past life, along with the help of his trusted allies, Axe successfully drives back the imperial army. But before he can even catch his breath, an even greater challenge awaits him, rebuilding his devastated territory.