Late at night, hanging out and drinking with friends until you accidentally fall asleep together—something that's happened to everyone, right? In such a casual sleeping situation, the girls end up straddling the guy. While it's exciting, it's also a bit awkward with someone lying right beside you. Yet, once you overcome that awkwardness and fully give in to the pleasure, a new thrill emerges. Suppressing your moans as if no one else is there intensifies the erotic excitement more than usual, making this kind of sex an irresistibly addictive experience.