Xia Yan froze when he heard that voice.
Lucario?
Although Clair had retold the story of Sir Aaron, the "Aura Guardian" from a thousand years ago, a large part of it had actually been omitted.
As an "Aura Guardian," Sir Aaron possessed the Hero's Staff, which could strengthen Aura. At the same time, he had a Pokémon that was like both a friend and a disciple to him: Lucario.
Back then.
A war between two great nations had been on the verge of breaking out, with Rota City at its center.
To protect Rota City, Sir Aaron decided to seek help from Mew, who lived within the Tree of Beginning. He poured all of his Aura into Mew, allowing it to activate the Tree of Beginning and unleash Aura that soothed emotions, stopping the war.
The price was that the overexerted Sir Aaron lost his life.
So, before going to find Mew, Sir Aaron sealed Lucario within this staff.
In the blink of an eye, a thousand years had passed.
Xia Yan had originally wanted to test the difference between Psychic power and Aura.
Yet when he used his Psychic power, he unexpectedly touched upon the seal within the staff.
And the voice that rang beside his ear belonged to Lucario.
Because Lucario did not know of Sir Aaron's choice, nor did it know why he had sealed it inside the staff.
It only believed that Sir Aaron had abandoned his mission and forgotten his ideals out of fear of the coming war, choosing to flee alone.
Therefore.
Even after a thousand years, Lucario still could not let it go. It had practically become an obsession buried in its heart.
Xia Yan slowly opened his eyes and pressed his lips together.
Sir Aaron had undoubtedly possessed exceptionally powerful Aura.
Lucario