Haken no Kouki Altina

A soldier named Regis, skilled in reading but lacking in combat abilities, is stationed in a distant area where he meets Altina, a red-haired girl with crimson eyes. She is the fourteen-year-old illegitimate daughter of the Emperor and has been named commander of the region's army. Despite her young age and difficult circumstances, she remains determined to achieve her aspirations. Recognizing Regis's strategic mind, she seeks his help, and the two work together to overcome challenges. The story blends elements of military strategy with the partnership between a book-loving soldier and a young princess who wields a legendary sword.