Every sexual fetish ever invented is available in Japan, and if it isn't then it doesn't exist. Tokyo itself is one perverted society of chikans and chikaos.
When I was there last in 2010, sperm sharking aka 'cumshot terrorism' was the main fetish going around Tokyo at the time.

Down in Yokohama pussy flowed more freely. But where I picked up most OLs off the street was in Kagoshima. That's pussy heaven. Those Nippon sluts can't get enough of Aussie BWC.

If wanna suck tits here you can. I can point you to the biggest fucking tits I know. But they ain't gonna be lactating tho.