Unknown Self

Yoora, a 18 years old teenage girl who lives with her brother Jongsuk, a 21 years old college student which is always rarely at home because of his college thingy but he stays at his college dorm and only come back home during emergency's or weekend.
One day, while Yoora is at school, her day became so different and there is a few changes is happening to her so does Jongsuk while he is doing his assigment at college. Jongsuk noticed the change and knew why. A few days passed after the drastic change on Yoora's phisycal, she moved to other school because all the students keep teasing and bullying Yoora because of her look which is different than a normal human being. She moved to the new school and met with a boy which changed Yoora's life although it is her first day there.