After Shawn finished explaining and demonstrating at the lectern, a young Black wizard eagerly raised his hand.
Shawn first restored the teaching desk to its original state, then spoke gently.
"Mr. Frank, go ahead."
The young Black wizard stood up, pointing at his broad grin of gleaming white teeth.
"Professor, could I use the Severing Charm to pick my teeth after meals?"
Shawn was rather pleased with the boy's imaginative idea. He praised him in Ford's usual tone.
"A very bold and interesting idea. Of course, you would need to be extremely proficient with the Severing Charm.
"Otherwise, the healer in the Hospital Wing might give you a great deal of Tooth-Growing Potion so foul it would make you vomit. So I would recommend using Scourgify to care for your lovely white teeth instead."
The young wizards burst into laughter. Frank took no offense and confidently showed everyone his teeth again. Next, a young witch raised her hand and, at Shawn's acknowledgment, stood to ask a question.
"Professor, you've stressed the effect of willpower on magic before, but how should I develop that ability?"
Shawn took a moment to organize his thoughts, then began speaking fluently.
"People's willpower seems to vary in strength. Some people are naturally tenacious, while others seem cowardly.
"But that isn't actually correct. At least, it doesn't apply universally to the kind of willpower that benefits magic.
"Does anyone know why Ilvermorny and Hogwarts use their own methods to identify your qualities when you first enroll?"
Shawn's question made the young wizards frown in thought. When no one raised a hand, he smiled and continued.
"The reasoning behind it is actually very simple.
"The schools want to emphasize particular qualities in your subsequent education. In other words, they want to uncover your greatest source of emotional