Mai Kagari, a caregiver, is assigned to look after elderly man Yoshio Yoshida. On their first meeting, Yoshida instantly falls for Mai's adorable appearance and immediately demands she start caring for him, making unreasonable and forceful requests. Though confused, Mai is overwhelmed by his aggressive attitude. As Yoshida subjects her to relentless sexual harassment, Mai begins losing her motivation for caregiving. However, one day Yoshida suffers a sudden medical crisis, and Mai frantically performs life-saving measures. Her actions save his life, transforming their relationship into something entirely new.