"Think positive. At least we now knew of one enemy at Hogwarts, and he was the kind lurking in the shadows, ready to strike at any time." Dumbledore sat beside Kayson and comforted him softly.
But Kayson paid him no mind. He suddenly fell into thought, then quickly looked up and spoke.
"...The problem is... I suddenly remembered something. Alchemy can create objects that are almost perpetual-motion machines. You could also understand them as life—life in the broad sense, of course, like flowers and grass. But for this kind of low-intelligence life, perhaps specific programming could let it use all sorts of magic. Yet making it cast a spell like the Confundus Charm should be very difficult."
Dumbledore added, "At the very least, it would need an operator... or perhaps there was simply a second one at Hogwarts. After all, Hogwarts had gained quite a few outsiders this year."
"Who could it be? It'll be good once Snape brews enough Polyjuice Potion antidote, but I can only say that it won't be very useful in this situation. Like I said, there are many outsiders at Hogwarts this year..."
"Pull out one nail, and Tom could seamlessly hammer in another." Dumbledore gave a pessimistic answer.
"We can't just leave it alone, can we? Who spends a thousand days guarding against thieves? And right now, we don't even know who the thief is. There's no way to guard against him." Kayson spoke helplessly.
"What I mean is, Neos is now an alchemy puppet. As for that other hidden Death Eater, we need to find him and monitor him—but we can't expose him. Let him live under our surveillance."
"Otherwise, when Tom wants to drive another nail into Hogwarts's flesh, the only ones who will be hurt are Hogwarts's young wizards and other