Kuroo Tetsurou x reader || Kiyoko Shimizu's sister ||

(Kiyoko is 9 years old and You are 7 years old in this backstory) You are Kiyoko Shimizu's younger sister. You and your family are really rich. But.........When your father cheated on your mother....They got apart. Your mother took your sister, Kiyoko. And your father took you. 4 years later, You now have a step-mother. She is very mean when your father's not around. She treated you like shit and dump. You and Kiyoko always text and video chat. But you always wonder when will you be able to get away from this hellhole. 5 years later, You finally conviced your dad to go to your Sister, Kiyoko and Your mom, M/N. Wonder what will happen to your life when your life there?