"Where do you think I will live, after Hogwarts?"
"Huh?"
Regulus assumed his brother wasn't really listening to him, surrounded as he was by piles of odd little metal objects and coloured wires and what had apparently once been a muggle wireless.
"I suppose I could go and stay with Aunt Cass and the horses."
"You'll live here, numpty."
"But this will be your home. You're the heir, Sirius. You'll be head of the family."
"Nah. That's not me. You take it."
Regulus frowned. That's not how succession worked. The Blacks didn't just abdicate, all… willy-nilly. Sirius was a moron.