"But why didn't you tell him yourself?" Kayson asked.
"From the time I was locked up in Nurmengard until I appeared at Hogwarts, we hadn't seen each other for... forty-seven years, perhaps forty-eight. He'd been avoiding me, you understand?" Grindelwald explained.
"Then it seemed Dumbledore had also guessed something about Miss Ariana's death. The reason he didn't want to see you was because he didn't dare hear the definitive answer from your own mouth." Kayson nodded in sudden realization.
"But I remember the portraits in the Headmaster's Office saying that Dumbledore went out every christmas. I didn't know what he was doing before, but after learning you existed, I thought he was going to see you."
Grindelwald shook his head. "He could be described as cold-hearted. How could that be?"
"...What about Aberforth?" Kayson asked again.
"There was no one in the Dumbledore family who shirked responsibility. Although Aberforth wasn't clever, he wasn't foolish enough to blame his own mistakes on his brother Albus... Though I heard their relationship wasn't very good now..."
"That was normal. For Aberforth, not pointing at Albus's nose and calling him the murderer of his sister was already remarkably gentle."
Grindelwald sat on the sofa with one leg crossed over the other. The long conversation had put him in high spirits, and with a wave of his hand, a bottle of liquor flew over from the cabinet beside them.
"Would you mind if I took a souvenir with me?"
Kayson scratched his chin in confusion. "You mean you came empty-handed, and when you leave, you want me to give you a souvenir?"
"This is an exchange. I'm trading the security loophole in your office—for example, how it can't prevent the instantaneous movement of a Portkey." With a buzz, Grindelwald vanished.
Kayson's mouth twitched, and he