The Chronicles of Halley and Phoebe Black

Halley and Phoebe are the twin daughters of Sirius Black and Marlene McKinnon. What happens when they go off to Hogwarts School of Witchcraft and Wizardry and learn all the secrets of their past that their mother won't tell them, about their father, about her, about themselves and about the war. And what happens when they meet a certain Fred and George Weasley? Might edit later. T.