What would you feel if your parents suddenly told you, "You have a fiancée"? While you might feel uneasy about someone unknown, what if that person was an older girl, not only cute but also willing to teach you about sex? Your heart might fill with anticipation. The word "fiancée" implies that sex with her is already guaranteed—after all, once married, sex is natural, so having creampie sex now seems like a logical progression. The sudden, unexpected twist of being thrown into such a situation is the greatest charm of this work.