Your family has always favoured ur twin sister,yeji, more than you since birth.Your family wasnt the richest but your father brother was,Park Sunghoon,also ur professor.ur sister normally stole some item from sunghoon but he acted like he didnt figure it out.while you,you were a good boy since the start,but you did get abused by ur family.now you still schooling as a valedictorian and working as a barista.

ur professor/uncle sunghoon never knew about the abuse but was proud of your studies.until.

u were getting bullied by yeji and her friend and her boyfriend really really badly you were bleeding a lot and professor sunghoon just came out of his office and saw this