Saga of Tanya the Evil (2019)

"Saga of Tanya the Evil" (Yōjo Senki) is a Japanese anime adaptation of the light novel series of the same name, produced by NUT. The story follows an atheist Japanese salaryman who, after being murdered by a disgruntled subordinate, is reincarnated by "Being X," who claims to be God, into a magical world of war as a young girl named Tanya von Degurechaff. To escape the cycle of reincarnation, Tanya joins the Empire's Mage Corps, showcasing her incredible military prowess and ruthless personality on the battlefield. The 2019 theatrical film, "Saga of Tanya the Evil: The Movie," is a sequel to the TV anime series. Set in 1926, it sees Tanya and her battalion returning to the Empire after defeating the Republic's remnants, only to be immediately sent to the Empire's eastern border to confront the Russy Federation. The plot highlights Tanya's ruthlessness in battle and her conflict with "Being X". This series stands out in the isekai genre for its anti-hero protagonist and its blend of military strategy and magical combat.