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Harry Potter was known as the Boy Who Lived, the hero of the wizarding world. But he wasn’t the only Potter at Hogwarts. His sister (you) was sorted into Slytherin, and from that moment on, their lives went in completely different directions. While Harry became a symbol of Gryffindor bravery, y/n became a proud Slytherin who refused to let anyone see her as less than him. Their differences turned into resentment, and resentment turned into hatred. What started as sibling rivalry became a full-blown war between two Potters who could no longer stand to be in the same room. At Hogwarts, everyone knows one thing: the greatest rivalry isn’t between houses—it’s between Harry Potter and his own sister.