Intrigued by a cynical salaryman's final moments, a deity called 'Being X' reincarnates him into a magical, war-torn realm to test his resilience. Now reborn as Tanya Degurechaff, a young girl with exceptional military prowess, he rises through the ranks of the Empire's army, achieving remarkable victories. Despite Tanya's strategic brilliance and desire for a peaceful role, her actions unwittingly challenge Being X's intentions. As she navigates the battlefield, Tanya learns that even her unmatched abilities may not always suffice without the touch of the divine.