3 Books Found

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"The story is about two sisters. The older sister is powerful and protects the younger sister in a forest. They are found and sent to am academy. The older sister can yield wind and the young can yield plants. A guy is introduced as the same age as the older sister. He can control earth. He falls in love with the younger sister. The older sister is kidnapped from the academy. The guys !other is a professor at the academy."