Her character name is Futanari-chan, but why does her name tag says "Riko"? Is she hiding her identity?
In Japan, it's common for workers in the entertainment and sex industry to use a pseudonym known as a 源氏名 / genjina. The reasons for this include making it easier for customers to remember their names and matching the atmosphere of the venue. However, the most important reason today is the protection of personal information. In that sense, it can be said that she's concealing her real name.
Also, if she's the same girl as the one in post #4667963, her name seems to be 理乃子 / Rinoko, so I feel like 'Riko' is more of a nickname than a different name.
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