I had been married to my wife for three years and we were living a happy married life. Then, my wife's father, the father-in-law, died of an illness. I couldn't leave my mother-in-law in grief, so she decided to live with us. Since we both worke
 
            
           
            
                Keywords:
                                    
                        Japan
                    
                                    
                         Fumino Ishikawa
                    
                            
        