Day 21: Out of all the characters that died, if you could bring one back, who would it be

Oh, dear. This is too hard a question! There are so many I would like to bring back: Dumbledore, Fred, Lily, James, Lupin, Tonks...
I think I'd bring back Fred, because he still had all of his life ahead of him, unlike Dumbledore, and so that he and George could continue to spread joy amongst the people.