We asked a couple of good friends on the street to take us to their studio for a questionnaire! They were challenged with the extreme mission of getting 1,000,000 yen if they could escape from their virgin brother who was chasing after them because he wanted to have Nakadashi sex with his big-breasted sister! Is he really my brother? The sensitive sister comes hard again and again to the desperate piston and vaginal ejaculation of the adulterous brother who chases after her and inserts himself into her no matter how she runs away! The time limit is 60 minutes! The game of Nakadashi tag that you can never tell your parents about!