Yoshino moved to the city in search of work. Suddenly, she found herself living alone with Taiichi… After losing her husband, Yoshino felt a sense of loss and ended up having a physical relationship with Taiichi. Since then, Yoshino and Taiichi have been a parent-child pair who have sex all the time. On the anniversary of the accident, they would go to the pond to offer flowers. What would her husband think if he knew that Yoshino and Taiichi had crossed the line as parent and child…? Despite feeling guilty, she couldn't end the relationship with Taiichi…
