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Leebar, Good of you to get the ball rolling.
I take full credit for jugulear's excellent post.
So given the limited cultural toehold Halloween has in Japan, I'm wondering...
what would a thoroughly JAV Halloween movie look like?
I think you have to have Americans showing up as the social pathogens. If you set it in the U.S., (the loli crowd will love this) all you need is a heavily decorated house, a young-ish JAV actress walking up to the front porch in-costume, and a big black American opening the door. If you want to keep the story light, he offers her a bowl of candy to pick out what she wants, and has his huge cock sticking up through a hole in the bottom of the bowl amidst the candy. She reaches in and grabs the throttle for the next 40 minutes of story line.
If you want the plot to turn heavy, there could be a Halloween party going on inside so a gangbang ensues.
If you set it in Japan, the black Americans could show up at a Japanese home, trick-or-treating. The rest of the storyline would be determined by who you have answer the door. Whether it's husband, wife, students, etc., they would be surprised and unfamiliar with the tradition and the action would resolve some variation of "No treat? Then you get the trick!"
A more comedic in-Japan version would be to have a Japanese girl who has some nice, American neighbors. She reads about Halloween and decides to bring her American neighbors a taste of home. She dresses up in a non-erotic costume, knocks on the apartment door with her bag for treats--UNAWARE that the neighbor is hosting a
bachelor party that evening. When the door is answered, the men all believe she is the "entertainment" they requested. She goes along hesitantly, confused, for awhile thinking this is just Halloween tradition she didn't know about.
I'm pretty sure the ending of that version would have the girl, barely back in costume after several hours of multi-P sex, exiting the apartment, her treat bag full of money, standing there in the hall looking shocked and amazed. Finally she begins walking down the hallway, a bit painfully, and... knocks on the next apt. door to say "Trick or treat?"