The little princess of the Mafia King

Kim Y/n, a pretty girl who turned 19 a month ago. Kim Taehyung, The mafia king and Y/n brother. Their mom and dad died in an accident when Y/n was 10 years old. Taehyung loves his sister more than anything but always scold her and show her that he hates her. she gets bullied in the school too, the bullies say that your brother don't love you so he won't come asking for you even if you die. Y/n was in an mentally ill stage because of the bullies. Her class teacher has a bad intention towards her from the starting. she tried to tell Taehyung about this but he refused to believe and said she was just over thinking. One day, Taehyung came from a long day of work that's when her class teacher called him and said that Y/n was not studying well, she always keeps on talking in the class and don't focus on the lecture which made Taehyung angry. He cut the call and waited for her to come downstairs. Y/n came downstairs with small steps and trembling hands. she stood in front of him and was about to say something when Taehyung slapped her harder in anger and shouted at her for not studying. but the truth was that her class teacher was forcing her to kiss him but she refused to do he called Taehyung and said those false things and before she can say this to him he jumped into action. he left from there to his room before slamming the door shut behind him. after that day, Taehyung don't even glance at Y/n.