Sachi and Ayari become sisters all of a sudden when their parents remarry. The two of them have to live together after their newly wed parents set off immediately for an overseas trip. However, Sachi gets scared of Ayari who does not say much and gives her piercing looks. She is feeling very anxious about life under the same roof when they receive ham from their parents. Ayari briefly glances at a bewildered Sachi before she begins prepare the ham. This helps the two of them to start opening up to each other and their bond as sisters deepen through cooking.