A friend of his has come to Tokyo from the countryside and brought his girlfriend and her sister with him. The man sees his friend making love to his girlfriend in the middle of the night in the bedroom where the four of them are sleeping. However, after his friend ejaculates, he goes to sleep, ignoring her in agony. Unable to hold back any longer, the man makes a move on his girlfriend after her boyfriend has fallen asleep, and then on his sister, who has woken up to a voice and is watching next to him. This time, for the first time in the series, we will enjoy a threesome of sisters with continuous creampies.