A restraint suite that drives men crazy!? First time in harem slut play, bullying a masochistic man! Jerking off his huge dick that can't move, making him cum over and over again! Miku (24), an apparel store clerk, and Mayu (25), a nursery teacher, are lovey-dovey couples who take on a swapping game where they exchange partners! ! The winner who can make the other person's girlfriend and boyfriend cum the most will win 1 million yen!? Mika (23) & Atsushi (23) VS Rina (21) & Takuma (21)