I know no other way to describe this, so I'll just use the fic summery


"Crossover with Charmed and Twilight: After Harry's mother gives him up at the age of two he finds himself in the an abusive foster home with the 9 Halliwell children. He takes them and runs to Forks where his father finds him. EC/HP SB/JP/RL SS/LP"

http://www.fanfiction.net/s/4793124/1/Come_Twilight