When My Little Sister Enrolled in the All-Girls Knight Academy, I Became a Hero Who Saved the Country for Some ReasonNewImouto ga Onna Kishi Gakuen ni Nyuugaku Shitara Naze ka Kyuukoku no Eiyuu ni narimashita. Boku ga. 妹が女騎士学園に入学したらなぜか救国の英雄になりました。ぼくが。

My little sister enrolled in an all-girls academy that trains aspiring knights. Even at this academy, renowned as the most prestigious in the kingdom, my brilliant little sister still easily displays her overwhelming prowess! "Nii-san, I told you already—you're much stronger than someone like me!" No, I'm just an ordinary commoner, you know... (※That's a lie. Nii-san is insanely strong. He just doesn't realize it.) Because of that, a female knight from the academy appeared and challenged me to a mock battle. (※The strongest female knight in the academy instantly realized the difference in their strengths.) Then, I gave her some post-battle care. (※The female knight enjoyed Nii-san's massage so much that it became popular among the nobility.) And just by doing what I normally do, I caught the eye of the QueenーEh? Why!?