Keiko, who had been living a happy yet ordinary life with her husband of five years, had one problem. It was living with her father-in-law. She couldn't bridge the gap with her taciturn father-in-law, which frustrated her, and his enigmatic presence was also unsettling. One day, when her husband came home late, she heard her father-in-law's voice from the bathroom. 'Keiko, could you wash my back?' Keiko felt a bit happy to be asked by her father-in-law, but from that day on, her happy married life began to shake...
