Sirius was very much like a long-winded mother, fussing over Harry and telling him what to watch out for over the summer holidays. Standing nearby, Su Er even caught a bit-
"If that cousin of yours dares bully you again, I'll leave a few interesting magical items in the house next door. Some can turn your cousin into a pig, and others can turn your uncle and the rest into mutes to keep them quiet for a few days."
"If they still dare shout at you after that, write to me. I'll teach them a lesson they won't forget when I get back."
"Oh, right, the trace won't detect these items. They're just a few pranks, so the Ministry of Magic won't bother with them. All you need to do is casually put them on them, then leave."
"Oh, and in my room upstairs, beneath the drawer, there are some Galleons I left for you. A few hundred or so. That should be enough for your summer holidays."
Su Er: ... Just listen to this. What is all this? Does having money make you so great?
Bang, bang. While Sirius was still giving Harry instructions, someone knocked heavily on the wooden office door. Then a tall, burly figure walked in. It was Hagrid.
Hagrid clearly didn't find it strange to see Harry in the office too. He said to Sirius and Lupin,
"The carriage is ready. It's right outside the Castle."
"Thank you, Hagrid." Lupin bent down and picked up his suitcase. "We should go, Sirius."
The three of them accompanied Lupin and Sirius all the way to a level stretch of stone road outside the Castle, where the carriages stopped when they arrived at the start of term. A carriage was already waiting there, and, unsurprisingly, a Thestral was