"Apologies accepted," he said, smiling. "I don't know if I can stop with the last names. School ended a few months ago for me, but I can try. Now, if I could do something so that my brother could use my name correctly, I would appreciate it. Hexing him when he uses a nickname is a perfectly good way to train him-" Thinking about it, he might just have to do that.
He nodded. "Being not dead is a great incentive for all of us. The only difference we have over Potter and Ron is that they don't know how they died, while we do. There is no way that Sirius goes back and doesn't change things. There might be a way to kill the Dark Lord without the Potters getting involved, but that's a completely different discussion." He grinned. "Consider it payback for some of your pranks, and I didn't even have to do anything other than tell the truth, so you're very welcome."
Regulus frowned. "That seems rather useless now. We don't know how close Muggles have gotten, making it more of a risk when we have the Hogwarts grounds. You can run around all night and tire yourself out. We can be safe in the castle. We might have to put spells to stop you from getting into the Forbidden Forest. I have a feeling that you might be the one in danger in there."