Onna Kishi wa Kukkoro Nante Iwanai Manga
女騎士はくっころなんていわない
Completed
Commander Brittany is dispatched to reinforce an outpost on the frontier. As the knights there grow increasingly dissatisfied with her rigorous, single-minded training, they suspect that she is being driven by the pursuit of her own personal glory... (Source: Shueisha, translated)