Outcall service is must-do in Japan.

Japan has delivery service for adults.
The cool schedule of Japan trip is to enjoy cafes, restaurants, or shopping for household electric appliances, games, or daily products, and to experience adult outcall for sexual service in a private hotel room from the dawn in the evening to midnight.

Concrete method to use outcall is as follows. Outcall escorts do not have real stores, so you search delivery health official websites on your PC or smart phone.
You can check girls' photos, service, price, prohibited acts and so on their websites. You read well and call the escort when you find your favorable girl.

Then, the escort girl visits your private room. You do not have to walk around in unfamiliar adult entertainment areas in Japan.
Both of you become topless probably for body wash in a shower room.
You can fully enjoy all erotic sexual service like whole body licking service, sumata, blow job, sixty-nine and so on in a private room. After the service, the girl just leaves your room. Even foreigners not familiar to Japanese escorts can try secure night entertainment on your first visit to Japan.