We called out to a couple and their male friend who were visiting a hot spring inn, and if they could have sex next to the boyfriend while the three of them were sleeping in a river shape, we would give them a prize! What's more, we would win 100,000 yen for each creampie! Despite their conflicts, the two young people are carried away by their sexual desires and end up having continuous creampie sex! They are excited by the thrill of raw insertion and not being found out! We have four couples' midsummer night cuckold scenes!