"You’re early. What’s wrong?" Harry asked, and Severus could not help but admire how he simply stated such an important observation. There were indeed some complications that Severus should have foreseen. Still, he had no idea that Lupin’s child would be at Hogwarts the same year as Harry. And as a result, the old codger wanted him to start brewing in advance so they could have a month’s supply on hand. Additionally, Dumbledore decided to send Hagrid to fetch Harry and deliver his acceptance letter.