Des：Mai, a caregiver, is dispatched to care for an elderly man, Yoshioka. When Mai comes to meet her, Yoshioka takes a liking to her lovely appearance and rudely tells her to start caring for her on the same day. Before she can be confused, Yoshioka, who has a strong sexual desire, attacks her with insidious sexual harassment. Yoshiokas innocent body is being eaten away by the old man, and he tries not to get tired of the job of caring for him, but one day, Yoshiokas health suddenly changes. Mai immediately performs life-saving measures, and Yoshioka saves his life. And the relationship between the two changed drastically after this...