Indeed, the setting is often also similar: schools, with teenagers swapping. I guess this reflects a general Japanese male interest in school girls in uniform. Whatever causes crossdreaming, it is bound to be shaped by the local culture.
I will follow up my post on the popular Red String series of movies, giving you a taste of Red String 6, code named idol121.
The red string is a magical conductor that leads to the body swap.
Version 6 follows the formula to the letter. But why is it than when the boys become girls they become enthusiastic explorers, while the girls become paralyzed and stupid?
I suspect it would be to threatening to the male psyche to have girls enjoying the fruits of manhood without fear. But the fact ist that Japan has a thriving female to male transgender erotic comics industry. The producers of Red Sting is clearly missing an opportunity here.
The following clip is sexually explicit and for adults only!
If you want to buy the movie, the following stores may be of help: (search for idol121 or IDOL-121)
h-lov is in Japanese, but you could use Google translate
See also my post on Dream Story. and helpful comments under the post on IDOL-114.