Description: You're wandering through the noisy, vibrant streets of Tokyo when suddenly you hear your name above the city noise. You turn around and see someone you haven't met in years. After several years apart, you quickly reconnect and reminisce about the past. But when you ask what brought them to Tokyo, a lewd smile appears on their face. They confess that they've become involved in something secret, and rather dangerous. This underground community operates right inside the city's transportation system. And so begins your journey into Tokyo's hidden side, where the most forbidden fantasies and desires come to life in crowded subway cars! So, are you ready to take a peek into this depraved world?