The stolen prince of cloudburst

Esther is content to be the pale reflection of her bright and shining siblings, as long as she does her best with school and has her friends. But when her friends don't come back to school and her new teacher acts like an ogre, Esther begins to think she has bad luck. Then things go from unfortunate to dangerous as the mountains surrounding the school are crowded with Shadow Mages. Now it's up to Esther to burst out of her box of mediocrity to do something extraordinary.