Kyurem cracked a small smile as the brown-haired trainer entered his cave. He held no more doubts; the boy before him was the only human he trusted with his life. The two talked for a while, with Kyurem apologizing for his actions and the trainer reassuring him there was nothing to worry about.
"You were possessed. It wouldn't be right to blame you, Kyurem." He nuzzled him appreciatively.
The boy stood up, offering the Boundary pokémon his friendship and a chance to see the world. Kyurem gratefully accepted his savior's offer. Briefly, he wondered if Jirachi was spying on him.