Cosette belonged to a rather wealthy and influential noble family. As the daughter of such, she had to deal with constant high expectations and limits on what she could do. Any time she attempted to roughhouse, she would get reprimanded. Any amount of dirt or grime from playing outside would get her scolded. She was seen as the heir to her family with her entire life planned for her.

There was no freedom for her at all, and she hated every moment of it. She desired freedom and the ability to be what she wanted to be. She didn't care about being the heir, and wished that it went to her younger sister instead. She was tired of being prim and proper. She wanted to go wild and free. The very desire reverberated through her very being.

She would end up being visited by a fairy, who offered her the chance to be able to 'cut loose'.

Accepting, she would soon become Fairy Hero Roaring Beast Princess.

The basis for this Fairy Hero is Beauty and the Beast.