Koharu Miike lives in central Tokyo and runs a small cafe, while her husband works as an owner-chef at an Italian restaurant. Both are busy with their careers, rarely spending quality time together, leading to an increasingly distant relationship. One day, while cleaning the house, Koharu discovers a hostess's business card and realizes her husband has been going out at night. She learns he has been seeking emotional fulfillment elsewhere, dissatisfied with their marriage. When she tells him she wants to share warmer, more intimate moments, he gives no response, leaving her heartbroken and aware of his emotional detachment. Overwhelmed by loneliness and disappointment, she turns to an affair website as an escape from reality.