Natsume has been married for two years. She thought her marriage with her husband was going smoothly. However, as his work became busier, the distance between them gradually grew. Then, one day, when her husband returned from a business trip, she noticed something suspicious about him. Her woman's intuition made her feel uneasy, so she looked at her husband's smartphone. There, she found evidence that her husband, who was supposed to be on a business trip, had actually gone on a trip with a company staff member. She felt a pang of sadness as she wondered how things had come to this, as she had been getting along well with her husband up until then. She then consulted a friend about her husband's infidelity, and was advised to find an outlet for her feelings...