why do you hate me? 'karma x reader'

For some reason, Karma didn't like (Y/n) ever since childhood. He bullied her, even if he looked like he kept his cool, he was just rude with (Y/n). After getting separated and not seeing each other for years, not to mention when (Y/n) is in E-Class, he can't help but miss her and unexpectedly she takes an interest...