It will be difficult for fathers to have mischievous, spoiled, and especially extremely lewd daughters. The father in the movie is no exception, he has two daughters who are in adulthood, more precisely, they are in adulthood, that's why they are both very curious, want to explore many things in adulthood and fatherhood is one of the tools that they find the most useful. The two of them always do sneaky and intimate actions with their fathers like lovers in sexual intercourse. Indeed, everyone says that there is nothing wrong: "a daughter is my father's mistress in my previous life". This movie further proves to us that this statement is completely accurate, but it is only true when we are in Japan.