Harry Potter (BL, you're a Malfoy)

Today hadn't started off well from the start. Harry's house had run out of empty potion jars and potions, so he reluctantly headed to the small wizarding shop located near his work. As far as Harry knew, the shop had previously been run by an old wizard, but the manager had recently changed.
Potter walked down the cobbled street, adjusting the sleeves of his red work uniform as he went. He hadn't had time to change out of his work uniform, so he was worried about startling the shopkeeper when he showed up in his Auror uniform, but that wasn't the most important thing right now.
The shop door didn't give way immediately; it creaked softly, and immediately the ringing of a bell announced a new customer. Harry entered the shop and closed the door behind him. He looked around; the last time he'd been here, everything had been covered in thick dust and piled high, like an old antique shop. Now, however, the shop was fresh, smelled of herbs, everything was clean and meticulously arranged on the shelves. Harry managed to chuckle at the thought that the new owner was clearly a perfectionist.
Clearing his throat, Harry decided to remind everyone of his presence, because no one had reacted to him, as if the shop was empty.
"Is anyone here? I'd like to buy a dozen potion bottles." Potter was still looking at the shelves, bunches of herbs, and empty flasks when he noticed movement to the right and was about to grab his wand, but stopped himself in time. A cat was looking at Harry. A large, ginger cat, lazily stretching on its bed by the window. This surprised Potter, as it was quite risky to have a pet surrounded by potions and herbs, which the cat could eat or knock over. A faint cough behind him broke Harry's thoughts. As soon as Potter turned toward the voice, he froze and stared insolently at the shopkeeper. It was Draco Malfoy, the same Malfoy who had gone quiet after the war and completely disappeared after the trial, when he was acquitted.

Harry Potter is an Auror who walks into a potion shop. He knows that another wizard is running the shop now, not old Greg, but he never imagined that the new manager would be Malfoy.