I Can Defeat an Old Dragon With My Bare Hands. It's Usually Like This, Isn't It?

Fil was raised in the mountains as the grandchild of humanity’s strongest sage, inheriting his talent for magic, and strong enough to defeat dragons with her bare hands. However, one day, the great sage summoned Fil to tell him: “Fil, you’re actually a girl.” "Really!? By the way, what’s a girl?" Fil's ignorance of gender and other common sense knowledge worried the great sage. Concerned about her future, he decided to enroll Fil into the Royal Academy. It will be the start of an exciting school life for the innocent strongest girl! (Source: Piccoma, translated)