41-year-old Natsuki is in her 10th year of marriage and has no children. She works as a hotel front desk clerk. Her husband is ten years older, and their relationship began as a workplace romance. However, a year after marrying, he started half-heartedly performing during sex, leading to fierce arguments whenever she confronted him. After that, neither of them initiated intimacy anymore. Due to her husband's snoring, they began sleeping in separate rooms, and for the past five years, she hasn't had sex at all. Her body, in its prime, craved fulfillment, and she secretly masturbated at home. Yet, lacking any real sense of being loved, she felt an emptiness in her heart.