As he hoisted himself up onto the sloping rooftop he found his brother already huddled up there, knees tucked up under his chin. It was cold, and Sirius was smoking, but Regulus found that it didn't bother him all that much in the wake of what had happened.
He settled down next to his older brother and gazed out across the London skyline, searching for the horizon that was barely visible between the higgledy-piggledy buildings and dusty smog.
"Are you alright?" he asked quietly.
There was a pause that seemed to contain the weight of a thousand undisclosed emotions.
"No."