For one week, the father is absent from home due to an overseas business trip. The college student son, under the guise of a school assignment, begs his stepmother to help him with Polynesian SEX. This is different from ordinary SEX that aims for physical union, and it is a SEX that aims to deepen mutual intimacy by emphasizing mental union rather than ejaculation over 5 days. Still unable to get used to it, "If the relationship between the two improves..." The stepmother accepts the request of her husband's stepchild. On the 5th day, when sensitivity reaches its peak, with the long-awaited insertion, she experiences brain bug squirting and climaxing! The stepmother and son who have crossed the line steal away from her husband and incest raw creampie to overflowing!