Regulus had never stopped looking after his brother, even though his mother would say that they weren't family anymore. It wasn't that simple, not by a long shot. His mother could blast all of her relatives off of the family tree, but that wouldn't erase the years of love and companionship that they'd shared. Still, Regulus couldn't afford to be disowned. He was the last male heir. The Ancient and Noble House of Black could not continue if Regulus were cast off.