C. Horizon
One by one, everyone joined them.
First it was Dumbledore.
And then Remus, and his wife Tonks.
And then Severus, who wasn't as bad as they'd all thought.
And then Frank Longbottom, followed quickly by Alice.
And finally, when he was no longer a crying baby but instead a tired war hero ready to rest, Harry.
After that, Sirius stopped noticing that time passed at all.
Because he was surrounded by everyone he'd ever wanted and everyone he'd ever needed, and as long as he had them, he didn't mind fading away into the horizon.
