Gunjin Shoujo, Seiritsu Mahou Gakuen ni Senyuu Suru Koto ni Narimashita.: Otome Game? Sonna no Kiitemasen kedo?

A girl named Raze is reborn in a fantasy world while retaining her memories from modern Japan. Using her knowledge from her past life, she quickly advances in the military and becomes a top officer in the Cyan Empire by age 15, earning the nickname "Wolf Fang." Her superior, a strict Prime Minister, sends her to the Central Imperial Magic Academy under the guise of a student to monitor the children of influential families. There, she befriends Folia, a healer, and Countess Kana. The peaceful school life contrasts sharply with her military background. Kana later reveals that the world is an otome game and that she is the villain. To prevent a bad ending, Raze must use her military and magical abilities to overcome various dangers. She faces unexpected challenges along the way.