Regis is a soldier who is equally inept with both the sword and the bow. He much prefers reading books. After being transferred to a remote region as part of his duty, Regis meets a crimson-eyed red-haired girl. The mysterious lady is Princess Altina, the wielder of the sword of the supreme ruler. Even though the girl is only 14 years of age, she has been appointed as the region’s army commander. This is due to her being the Emperor’s illegitimate child.
Nonetheless, Princess Altina remains cheerful and doesn’t let the environment depress her. She’s holding tightly onto her big dream. Before long, Princess Altina trusts Regis in full. As a tactician, the once-incapable soldier bravely stands up to the hardships by her side. The military fantasy light novel tells the story of a book-loving boy and a young princess wielding the supreme ruler’s weapon.