Disclaimer: I don't own Harry Potter et cetera et cetera.
Further disclaimer: I haven't had anyone proofread any of these.
Sirius blinked and tried to focus. Everything seemed foggy as he tried to remember what he had just been doing.
He could remember dueling Bellatrix in the Department of Mysteries. It seemed long ago and far away, like it had been a dream. He had fallen through a curtain and opened his eyes to nothing but fog.
As Sirius tried to collect his thoughts, he felt a weight slam into his chest. Someone had nearly tackled him to the ground with a hug. He stumbled a few steps backward before catching his balance.
"Sirius!" said the person hugging him.
Sirius stumbled a little more when he recognized the voice.
"Reg?" he said, barely a whisper.
Sirius put his arms around his younger brother. He hadn't realized how much he had missed him. He had tried not to think about it. Nineteen years of repressed guilt and longing hit him all at once and he hugged Regulus with enough force that it almost hurt.
Then another thought hit him hard. He put his hands on Regulus' shoulders and pushed him away.
"What were you thinking? What the hell did you get yourself into?"
"Oh, Siri," he said, "you have no idea."