Mikako, the sheltered young heiress, lived a life of luxury without a care—until she started working part-time, which drastically changed her fate. Her arrogant attitude provoked a sleazy older man, leading to forced blowjobs and relentless sexual abuse. From that moment on, she is subjected to daily training through his obsessive, invasive sex. Before she realizes it, Mikako has been reduced to a moaning, cum-craving vessel—a once-proud daughter now a desperate, ahegao sex slave.