The answer to your question was basically answered above but here it is again.
Prostitution is illegal here in Japan. Even if you get through the doors of a "Soap Land" there is no guarantee you will get intercourse.
There are a few kinds of "Adult entertainment".
One is soap land, varying in price by area and quality. The only ones in Tokyo that fully accept foreigners are in the Yoshiwara area. They have English speaking front staff and they will make sure you understand all of the rules. If you call ahead, reserve and choose a girl there is no reason you should pay premium prices. Prices are comparable with other establishments in the area.
Pink Salons or "Blowjob bars" are another option. There are only a few who accept foreigners, in Gotanda and Shinjuku. But.... just don't bother. The only girls who work in them are girls who can't get work anywhere else, over the hill or unattractive. If you speak Japanese and have a Japanese friend who will speak for you you MAY have a CHANCE at some places.
Deriheru "Delivery Health" is probably the best option for a tourist. Just search Google for services. Girls come to your hotel or an arranged love hotel. Again as selling sex is illegal there is a chance you won't be getting sex unless you and the girl can come to some private arrangement IF you hit the jackpot and she can say more than "Hello" in English. There is one place in Uguisudani that has Asian but non-Japanese girls that caters for foreigners.
Whatever you do. DO NOT go with a tout on the street!!! You will be disappointed, robbed or put in a situation you do not want to be in. Just don't do it.
Basically the sex industry is not catered for tourists or foreigners. They don't need our trade. They don't want to deal with the hassle of English, explaining the rules and to be fair, in a LOT of cases, dickheads. It sounds harsh but I am a foreigner in Japan for 10 years + and I get why they just say no.
Also, for example, if word got out that a foreigner went to a decent Pink-Salon with nice girls and a good price, the next day there would be a line around the block.
Excuse the long winded post .
Mother Knows Breast Episode 2: https://phimhentaiz.org/.