The Sword of Gryffindor that had belonged to King Arthur, and the Sword of Gryffindor that had belonged to Godric Gryffindor, were the keys to the Black Stone Tower?
Amosta's words left Dumbledore stunned once again.
But after pondering for a moment, Dumbledore clapped his hands and sighed.
To prevent Herpo from returning to their world, to keep the world from falling into the abyss of darkness—
Merlin and Hogwarts' four founders had truly exhausted every possible effort.
They had cautiously left behind clues, made arrangements of impeccable precision, and preserved hope for the world.
The Sword of Gryffindor was a relic of Merlin's friend. Nothing could have been more fitting than using it as the key to the Black Stone Tower.
Moreover, Merlin must have glimpsed through the river of time that Gryffindor would bring this sword back to Hogwarts.
After more than a dozen centuries of silence, the tower finally welcomed its first opening.
When Amosta inserted the Sword of Gryffindor into the keyhole, all three of them could even feel the black tower tremble with excitement!
Though they were souls and had no need for air at all, Dumbledore and Grindelwald still held their breaths.
The dim violet radiance spilling from the slowly opening door made the souls of all three appear even more solid.
Ting—
The chime of wind bells rang out without warning, its clear notes seeming to draw one from reality into a dream!
The vast fan-shaped cavern of the underground world vanished from their senses.
As if waking from a fleeting dream, each of them looked in a different direction, carrying a faint sense of bewilderment and loss.
They stood in a world that seemed boundless and empty.
The world was suffused with a shade of dim violet, neither deep nor pale, like