Luna and Henry stood facing each other, the faint sounds of the trainees struggling with their spells drifting in from the horizon. Luna crossed her arms over her chest, her emerald-green eyes fixed on Henry with a mixture of impatience and curiosity. "So," she began, her tone sharp, "what do you know about Mana?"
"It's energy," Henry replied flatly, as though that simple answer was all that needed to be said.
Luna's foot tapped against the frozen ground, a steady, irritated rhythm, as if she were hitting the pedal of a drum. "Of course, I know it's energy!" she snapped, her voice rising slightly. "Give me a real explanation. Where does it come from? What is it for? How does it work? For goodness' sake, don't just parrot back the obvious."
