Rei works as a newly graduated nurse, earning the trust of the elderly patient, Kiyoshi, with her honest work ethic. However, one day, she accidentally falls asleep during care. When Kiyoshi presses her for an explanation, she reveals that she's been working day and night to repay her fiancé's debts. Instead of sympathizing, Kiyoshi begins persistent sexual harassment! He forces her to feed him mouth-to-mouth, his tongue lingering, and during cleaning, he obsessively makes her care for his genitals. Calmly, Kiyoshi hands her compensation for damages. Worried about her future with her fiancé, Rei, after much conflict, ultimately enters into a "silent physical contract," crossing a line with the elderly man...
