Haikyuu X Reader ~ Ushijima's Cousin

Y/N spent her first year and one semester of high school at Seijoh also known as Aoba Josai. Once she was a certain someone took the biggest interest in her and his name was Oikawa he was a 2nd year at the time and the two got close he ask her to be the manager to make them even closer but her childhood friend Shouyo...