A man who developed a one-sided affection for a woman he happened to see on the street. He followed her and identified her home. The man sneaked into her room while she was out, installed surveillance cameras, and monitored her private life. This alone was not enough for him, so the man decided to move into the apartment where the woman lived. He continued to monitor her from the closest possible distance in a vacant neighboring room. His desires escalated day by day... finally...！！
