"Perhaps not," Hyperion replied glibly. "But I do it anyway." He arched an eyebrow at her for a moment. "A large portion of the planet's population gets on fine without having grandparents who were cousins, dear." He managed, after a moment of intense concentration to stifle a laugh at the way she reacted.
He merely lifted an eyebrow at the way she reacted to his house. "Well," he said offhandedly. "It's not as big as the one Persephone's going to inherit, but then she is the favourite grandchild."
He narrowed his eyes, all pretense of mockery gone. "Really," he asked flatly. "I've asked mother, and Apollo, and Persephone dozens of times about what happened that night. Persephone remembers being scared, Apollo says he doesn't remember anything, and mother gave me the scar on my forehead for pressing the issue. Why is this the first I've heard of this?" He stared at his sister for a long moment, trying to discern whether she was lying, which to his surprise, it seemed she wasn't. "So you joined the Death Eaters out of some twisted sense of fidelis," he asked, his voice rising. "You wanted to be an Auror and instead you threw your lot in with Riddle and his band of merry psychopaths because you thought we couldn't protect Persephone and Apollo? That was your only option?"