The Hatano couple went to visit Kashiwagi, a friend of the husband's, after hearing that he had been injured at work and was recuperating at home. Kashiwagi was half bedridden due to his injury and seemed to be having difficulty with everyday life such as cooking, doing laundry and shopping. Seeing this, the husband suggested, "If you don't mind, our wife Yui could stop by to help take care of him on her way home from her part-time job." The following week, Yui began visiting Kashiwagi's bachelor apartment. The married woman's bulge was so tender and diligent that she visited him at his bedside...