May I note one thing. Japanese gay sex is VERY vanilla indeed. They love and do it more romantic way. That's why they dream of some kinky action. If you come to Japan looking for unusual pattern, you will be disappointed. Drop by gai-sen-hatten-ba (potato queen cruising area) in Tokyo and you will see.

fountainhall-sama, a447-sama, nihon no gay wo ko'u'i teki ni gorikai itadaki totemo ureshi'i desu. Arigato'u gozaimasu.