Her husband's work had grown increasingly busy, leaving him unable to return home for days on end. Their marital life had stagnated, and Kozue's desires grew stronger each day. Her daily masturbation had gradually turned into more intense fantasies, yet she remained unsatisfied. Her lust continued to swell. Her son's friend, Atsushi, had noticed her growing frustration. Having long been attracted to Kozue, he saw this as the perfect opportunity to finally have her. One weekday afternoon, while she was home alone, he made up his mind to visit.