The Hatano couple visited their friend Kashiwagi, who was recuperating at home after injuring himself at work. Kashiwagi was in a state where he was half bedridden due to his injury, and it seemed difficult for him to live his daily life, such as cooking, washing, and shopping. Seeing this, her husband proposed, "If you like, my Yui will help you with your daily chores after her part-time job..." From the following week, Yui started going to Kashiwagi's bachelor apartment. To the wife's swelling who kindly and diligently visits him at the pillow...