This series explores the question of how a woman's body and mind are affected by the extreme condition of continuous penetration from morning to night. This installment features Ayumi Shinoda taking on the challenge. Initially hesitant, Ayumi gradually undergoes a transformation as the constant penetration heightens her sensitivity and alters her mental state. As the experience progresses, her pleasure intensifies uncontrollably. Ultimately, she loses all self-control, climaxing wildly and repeatedly in a state of frenzy. The entire sequence realistically captures the physical responses and emotional shifts she undergoes.