One night, when Gemini appeared in the Restricted Section, he ran into a white-bearded old man passing by.
"Good evening, Professor Dumbledore."
"Ah... good evening, Fox." Dumbledore was leafing through a book by the dim yellow light of an oil lamp.
It was precisely the book Gemini had been looking for, Fiendfyre from Hell.
"Snape told me that you seemed interested in learning how to control Fiendfyre?" Dumbledore's blue eyes studied Gemini. "Forgive me for saying so, but this spell is still rather too early for you, and personally, I do not encourage students to study such dangerous Dark Magic."
"But I can't summon a Patronus, Professor." Gemini spread his hands helplessly. "If possible, I'd still like to master it. So you don't want to teach me?"
"Of course not." Dumbledore looked at Gemini with a cheerful smile. "As a teacher, I have no reason to refuse a student's desire to learn. If you insist on learning it, then naturally I can teach you. It is only right."
"Ha..." Gemini blinked. "Then thank you very much, but, uh... to be honest, I'm a little confused..."
Dumbledore smiled. "Confused about why I am willing to teach you?"
"That's right..."
"Power itself has no distinction between good and evil, Gemini..." Dumbledore looked at him gently. "But people do."
As he spoke, Dumbledore closed the book in his hands. "Do you remember when I was merely the Transfiguration professor? At that time, there was a boy at this school as exceptionally gifted as you. He stood out the moment he entered Hogwarts. He was refined, polite, and appeared much like you."
"In fact, the two of you have many similarities. Both Slytherins, both remarkably handsome, both gentlemanly, both hiding lethal danger beneath gentle exteriors. Powerful, with many followers, and even your backgrounds share