Haruhi is the main heroine in the story. She is a mage in training and is seen as very skilled amongst her peers, who have been known to think of her as a genius when it comes to using magic.

Spoiler

When she was younger, Yuuma was able to use some magic in order to help her from some bullies which made her want to become a mage herself. Her magic wand is named soprano (ソプラノ, soprano).