I adopt this character from famous artist Sapphirus

Rebecca is the daughter of Headmaster Thomas the writer, and the little sister to Dashie Writer. Rebecca is a high honor student of the Academy, and one of the most dangerous person that you don't want to mess with. She concentrate of having high grades in her classes, and care less of making any other friends at all. The only people that she hangout with, is her older sister Dashie, and her friend Clara the Goodra. Most of the students and teachers that doesn't trust her that much, because she almost try to killed a student during their poke battle training. She like to be serious with her skill, but feel like the school was holding back her potential. Whenever she not with her family, or in class. Rebecca work with an evil force name Dexerus, helping him find anyone that can be control by the dark stone. No one know why she doing this, but all she care about is the deal that Dexerus made with her, and once she done what he wanted her to do, Rebecca will be unstoppable.