"Allen, earlier you said there was something you wanted to ask my parents about..." Once the small talk had just about run its course, Hermione took the initiative and brought up the topic Allen had mentioned before they entered Grindelwald's house, the one that had left her completely baffled. "What could they help you answer about potions?"
"Potions?" Mr. Granger looked confused. "Allen, the only potion we've ever taken is the Elixir of Life you gave us. Apart from not tasting very good, it didn't feel particularly special."
"Do the Dental Floss Mints Hermione often brings home count as potions?" Mrs. Granger said uncertainly. "They protect your teeth."
"I don't mean the Elixir of Life or sweets." Allen shook his head with a smile, then pointed outside in the direction of the Hogwarts Arena. His expression turned serious as he said, "I heard Hermione mention before that during the Floating City's ascent, and again during the city teleportation, both of you seemed to sense the fluctuations of magic."
"That's true. It was a comfort I'd never experienced before..." Mr. Granger recalled the scene that day. "But after that brief comfort came more panic. Those wizards whose behavior suddenly became abnormal rather threw us into confusion... Their reactions seemed far more intense than ours..."
"It was a bit frightening... At the time, I thought they had all gone mad somehow," Mrs. Granger said, still shaken by the memory. "But the feeling itself was quite pleasant."
"The Energy Core's output was much higher on those two occasions than usual. All of Hogwarts was covered in pure, high-density magic, far denser than the kind in the school before, the kind that could damage electrical appliances... And because of that, I had an immature idea." Allen's tone grew heavier. He paused, gathered his thoughts,