The Saga of Tanya the Evil, Vol. 4: Dabit Deus His Quoque Finem

A demon roams the battlefield in the guise of an adorable girl, and her name is Tanya Degurechaff! After returning from the sandy lands of the south, Tanya receives an incredibly suspicious order from headquarters to embark on a training exercise. But actually, her command has sent her on a secret mission to start a border conflict with the Federation. Soon, the Empire will find itself embroiled in another fight from which it will not be able to back down, even if it means making the entire world its enemy!