At a certain brothel, as an irregular VIP service, Ruri offers a unique "membership service" to customers selected by lottery.

As a member and avid fan, you were lucky enough to be the one chosen to share a night with Ruri....

Fellatio, penetration, bukkake, sucking and gokkun sounds, lots of semen drinking, rinsing and gargling, etc...
A sex service for one night only!

[Based on the official website's summary]