After her husband passed away, Reika and her son lived alone for many years. Eventually, her son began to feel affection for Reika that was not a motherly one. Recently, Reika met a man named Kitamura at her part-time job. They began to talk about marriage. Reika invited Kitamura over to her house for a fling. Her son, who had been watching, attacked her when Kitamura returned, saying, "You're not satisfied, are you, Mom?" Later, the situation became awkward and her son...