Sirius had no idea why he was up at this Merlin-cursed hour. It was barely after nine, and Sirius rarely rolled out of bed before ten, but he'd slept badly and then gotten up, giving it up for a bad job and going to pester Moony at the shop. He'd have gone to rouse James out of bed, since if he was up, James ought to be too, but with Harry only just gone off to school, Lily was probably crabby and would take his head off if he showed up early.
But Remus had insisted on actually working since they had customers, and that got dull after a hour hour, so Sirius popped himself off to Diagon. He'd poke his head into QQS, see if they had anything new they should know about, get a coffee and wake up.
He managed the coffee first and slouched onto a bench for a few minutes legs sprawled, mostly to make the snooty sorts glare when they had to step around them, and a large black coffee with unnatural amounts of sugar in one hand, sunglasses on against the morning glare which wasn't getting on that well with his slight hangover that he couldn't be arsed to do anything about.
He looked up when someone stepped up next to him, instead of around him, coffee half gone and headache mostly receded. Sirius squinted over top of the glasses and then threw the woman a quick smile, recognizing her. Not well, but he'd run into her a time or two, when he was shopping. "Morning," he greeted. Names were a little beyond his memory, though, and he doubted she'd fancy being greeted as "bird from the paper shop".