The morning begins with a cheerful greeting from お母さん, who is already in a romantic mood, excited about the new man in her life—ケンイチさん, a kind and handsome guy she met at a party. But her daughter, くるみ, isn’t quite as thrilled. くるみ is still sleepy, having stayed up late the previous night, and is annoyed by her mother’s constant chatter about her new love interest. The tension between mother and daughter only grows when お母さん announces that she's going to bring ケンイチさん to the house, and even invites him to be くるみ’s temporary boyfriend for the day.
Things quickly get out of hand when くるみ’s “temporary boyfriend” arrives, and the two begin to interact in a way that makes お母さん even more excited. The situation becomes even more complicated when お姉ちゃん shows up, adding to the chaos as she also has a boyfriend of her own. The family dynamics shift dramatically as the mother and daughter both get caught up in their own romantic adventures, with お母さん even getting a little too enthusiastic, much to くるみ’s embarrassment.
As the day unfolds, the house turns into a playground of seduction and playfulness. お母さん is completely taken by her new love, while くるみ and her temporary boyfriend start to get closer, making the situation even more awkward. お姉ちゃん, not to be outdone, also gets swept up in her own romantic moment with her boyfriend, adding more layers to the family's chaotic day.
The story takes an even more exciting turn as the night progresses, with お母さん getting increasingly excited, and the atmosphere in the house turning from playful to passionate. The family's love life is in full swing, and the energy in the room is electric. The final moments are filled with laughter, joy, and a whole lot of affection, making it a memorable day for the whole family.
