The 4th installment of a mass sexual desire survey project for college students! If two college friends who missed the last train are left alone in a love hotel until the morning, will they have sex or not? If they don't have sex until the morning, they'll get 100,000 yen, or if they do have sex and cum inside, they'll get 100,000 yen for each shot! Gradually, the two bodies get closer to each other in a different atmosphere than usual... The sexually active Amateur men and women can't protect their friendship and all end up having creampie sex! The two men and women can't contain themselves and are looking for each other's bodies!