[HP Fan] Her brother Alvin, who is six years older than her, one day received an envelope made of heavy parchment, the address was written in emerald green ink, and there was no stamp on it. There was a wax seal, a shield medallion on it, and a capital "H" surrounded by a lion, an eagle, a badger and a snake. From then on, Agatha knew that the world was not simple and looked forward to the arrival of her own letter...
Concept: Muggles are people who do not believe in magic