Pretear: The New Legend of Snow White

Himeno Awayuki, a 16-year-old girl, moves into her father's large mansion after his remarriage. Her stepfamily doesn't seem to welcome her warmly, with her stepmother often preoccupied and her stepsisters, Mawata and Mayune, showing little interest in her. The Leafe Knights, a group of seven magical boys, soon enter her life, asking her to become a magical princess who can borrow their powers to help protect the world and its source of energy, the Leafe.