The Fidelius Charm was an extraordinarily complex spell, using magic to hide a person's secret forever within the soul of a living person.
That secret was concealed within the chosen person's heart—the Secret-Keeper's—and would therefore never be discovered, unless, of course, the Secret-Keeper voluntarily revealed it.
As long as the Secret-Keeper said nothing, even if thieves pressed their noses against the glass of their living room, they would not see them.
But Cypher believed anyone who explained this magic that way had to be an idiot!
Yesterday's conversation with Professor Dumbledore had not been particularly pleasant. Cypher rose with a grim expression and twisted the doorknob, about to leave.
Then, without warning, he asked Professor Dumbledore whether anything unexpected would happen at Hogwarts next term.
However, Professor Dumbledore's answer was rather thought-provoking.
"Nothing unexpected will happen at Hogwarts!"
In other words, the war would break out on the mainland ahead of time?
Cypher silently released the doorknob he had been gripping.
He sat back down before Professor Dumbledore's desk.
"I want to learn the Fidelius Charm!"
"The Fidelius Charm? I understand."
Yet what Professor Dumbledore gave him was not his own notes, but a notebook written in French.
There was no need to guess. It had to be the notes of the French alchemist, Nicolas Flamel.
In the book, he particularly emphasized that this magic could not be cast upon something that left a deep impression on people, because casting this spell was equivalent to casting Obliviate on everyone who remembered that thing.
Naturally, that led to an even more important issue: the memories of the powerful could not be altered.
In other words, if Cypher cast the Fidelius Charm on Professor Dumbledore's office,
it would be equivalent to dueling Professor Dumbledore through the air. Failure would