One day on a holiday, Jun visited his girlfriend's house and was captivated by the ageless beauty and allure of her mother, Sayuri, whom he was seeing for the first time. Sensing Jun's feelings, Sayuri took advantage of her daughter's moment of distraction to flirt with him and try to seduce him… Overcome by Sayuri's enchantment, Jun lost all reason and forgot that she was his girlfriend's parent, ultimately engaging in a relationship with Sayuri. Since then, he has been pretending to have dates at home with his girlfriend while actually enjoying secret trysts with her mother, Sayuri…
