My Petite Girlfriend Is My Dad’s Sex Slave - Graduation Arc

Mayu has become deeply entangled in a secret and illicit affair with her boyfriend’s father. Despite her petite stature and seemingly innocent relationship with her sweetheart, she finds herself entirely at the mercy of her older lover's demands. He shows no hesitation in summoning her for clandestine encounters at the most inconvenient moments, interrupting both her academic studies and the romantic dates she shares with his son. As their reckless encounters grow increasingly frequent and daring, the delicate balance Mayu tries to maintain begins to fracture. The escalating nature of their hidden arrangement makes it nearly impossible to keep every detail concealed. With his girlfriend constantly distracted and disappearing under questionable circumstances, it is only natural that her boyfriend starts to harbor deep suspicions about where her true loyalties lie and what she might be hiding behind his back.