Toshiue Elite Onna Kishi ga Boku no Mae de dake Kawaii

Haru, a 16-year-old prodigy and the kingdom's strongest, is assigned to the Knight Order. Karen, a 29-year-old unmarried knight and Haru's superior, is known as the feared and noble "Oni Knight Leader." She is strict and demands confidence from Haru. However, Karen displays a different side only around Haru, such as inviting her to her room, behaving like a spoiled child, and showing unique expressions. She confesses her feelings and expresses emotional vulnerability exclusively in Haru's presence, which Haru finds endearing.