I do not know what it is, but I am a sucker for movies that start out with a barely legal girl tied up and being smacked around. Mari is a gorgeous and very young-looking Japanese girl that has the prettiest pussy I have seen. And, you can feel her pleasure as she screams and whimpers her way to orgasm. The realism will never stop in these titles, from the slurping of her pussy to the squishing sound of a guy's fingers penetrating her tight cunt. And, you'll really love the whines and begging voices that she makes. Have fun!