Just curious... the specific link you posted talks about 'New Half' types.
You know what a 'new half' is right? They can only take in the ass, it's the only hole they have other than their mouth.
Other Anal sex usually comes with a higher-price, it really depends on the girl and the shop as to how much and who will actually provide the service.
You will find that a lot of J-Girls won't go for it. It's rare to find one who's enthusiastic about it.
