The Female Soldier Has Been Told to Infiltrate the Imperial Magic Academy [LN/Manga]

[degeneratesock]

Author: 冬瀬 (Fuyuse)
Genres: Action, Fantasy, School Life, Shoujo
Tags: Academy, Aristocracy, Assassins, Average-looking Protagonist, Bodyguards, Female Protagonist, Hiding True Abilities, Hiding True Identity, Military, Monsters, Multiple POV, Multiple Reincarnated Individuals, Otome Game, Overpowered Protagonist, Protagonist Strong from the Start, Reincarnated in a Game World, Reincarnation, Romantic Subplot, Soldiers, Villainess, Noble Girls,

LN: V1 published 2021, 4 volumes out currently
Publisher: Ichijinsha

Manga: from what little I could find, it got dropped after 2 volumes.

WN: Completed with 92 chapters.

Synopsis: Raze, an overpowered 15 year old soldier with memories of a past life is given a new mission: Infiltrate the prestigious academy for the empire's most elite and guard the next generation of leaders in secret. While undergoing her mission, a world-shaking secret comes to light: "Wait, this is an otome game?!"

[Shiroi Hane]

軍人少女、皇立魔法学園に潜入することになりました。～乙女ゲーム？　そんなの聞いてませんけど？～
Gunjin Shoujo, Sumeritsu Mahou Gakuen ni Sennyuu Suru Koto ni Narimashita.