Toshiue elite onna kishi ga boku no mae de dake kawaii

Haru is a 16-year-old recruit of the “Black Hawk“ 4th Cavalry Unit of the Knights’ Regiment under the command of Captain Karen, a profoundly beautiful and fierce 29-year-old swordswoman, who, unbeknownst to all the unit except Haru, is a pure maiden with exactly zilch experience with men.