Serafina Black is not your ordinary 11-year-old. No one in school really likes her, everyone thinks she's weird and different. The thing is, she is different. Well, unless you are just like her, a witch. Serafina is to attend Hogwarts School of Witchcraft and Wizardry. Once she gets there, many new friendships shall be made and a lot of trouble shall be caused. But Serafina has a secret she is not allowed to tell anyone. There is a very simple answer to why her secret has to remain secret. But the answer, well, the answer is yet another secret. Follow Serafina on her little adventure full of danger, secrets and new friends. #DISCLAIMER!! THIS IS A FAN FICTION!!! I DO NOT OWN ANYTHING EXEPT THE CHARACTERS I CREATED!!!! ALL THE RIGHTS, CHARACTERS AND THE ORIGINAL PLOT BELONG TO THE AMAZING J.K. ROWLING!

"We have something Voldemort doesn't have. Twin power." Cassia is the twin sister of Harry Potter. Following the murder of Lily and James, Cassia is taken to Ted and Andromeda Tonks, far away from Harry. 11 years later, the two are accepted at Hogwarts and reunite, by chance, at Ollivander's. At Hogwarts, Harry and Cassia learn magic, form friendships, fight evil, and in (Cassia's case) maybe even meet their soulmate. *I don't own anything except my OC, Cassia Helena Potter*