Hoshimi Rika comes to the studio, believing it was a gravure shoot. While taking a photo without realizing it was a prank, a big dick man attacks her from behind and panics in a huge panic! Rika is surprised at how quickly he inserts her into her, but as she expedites the thrusts, she feels good and reaches a huge orgasm!! The big dick pranks that come one after another attack her mercilessly!!