Mirror Familiar

Description
When Rosemary was still a human, she often had dreams where she was the lead role going on various adventures. Sometimes, she has a hard time figuring out who she is. As a result, she always carries a mirror around with her to remind herself what she looks like. After entering the Academy, she utilized her experience and became the leading actress of the drama club.

Mythos
There isn't any known mythos relating to Rosemary. It may be based on the idea that mirrored images of ourselves are clones from another universe, or that mirrors reflect the person you are.