Ok guys, to reply to people who asked for details in the main topic :
Japan has different sex services from just talk with girls in a bar, to more intimate sessions. To cite some examples : kabakyura, snack bars, deriheru (come from delivery and health), Soapland, pick up girls (normal porstitution services), pink salons, shinchis, and many others..
All type of services have different rules and prices. Ririsu come into the deriheru one. However, her prices are far too high. i advise people to book another host. there is plenty of girls as cute and sexy as her in Japan.
As a foreigner, the most important rule is to respect girls, be polite, and don't be an asshole.
The shinchi areas are special. It's just in Osaka. it's like a a red light area, small town, old style, with many open shops. It's full service here but some shinchi have different rules, for exemple in Tobita, you can't kiss the girls. There is 5 main shinchi : Tobita, Matsushima, Imazato, Takii and Shinta-yama. Legend has it that a guy was able to finish all five in one night, but that's just a legend.
I'm a member of TAG (tokyo adult guide), if you need further informations, i'm always glad to help people as long as you dont act like a brat with girls (one again it's super important to be respectful).