I wrote another story about an exchange student, which involved a Russian girl being sent to a home with a girl named Ruth, who turned out to be a boy named Ruth. This is a story in the same vein, though with a different, more conventional take on the ‘exchange student’ concept. This story is fiction, including the sections which describe how incest is viewed in Japan, and which further list “common customs” in Japanese society. While there might be a very small kernel of truth in some of those descriptions, they exist only to further the plot of the story. So please don’t embarrass yourself with your Japanese acquaintances by trying to show them how much you know about Japanese cultural or sexual practices, based on what you read here.