Ichika, who worked hard at multiple part-time jobs to earn money for her boyfriend's tuition, was fired after making repeated mistakes due to fatigue. However, she begged the manager to help her earn money, and he gave her the condition that she perform sexual service during the late-night shift. Ichika reluctantly accepted the unreasonable request, but it also aroused the assistant manager's lust, and she was relentlessly trained in her voluptuous body...