Yume's younger brother was sick, and he divorced his wife a few months ago, so he asked Yume to take care of his two sons. Because she was worried about her two grandchildren, Yume agreed. It's been a long time since we met again, and now the two boys are grown. His brother is Sho-chan, who is obedient, but his brother Yu-chan is extremely naughty. He kept touching his breasts, buttocks, and pussy, causing Yume to be constantly aroused. Witnessing that scene makes Sho-chan excited and his cock quickly stands up, causing him pain. Seeing that he was in pain, Yume treated his nephew by "jerking" him. Since she had never experienced this feeling before, Sho-chan couldn't control it and peed on Yume's body. Because it was all dirty, Yume took Sho-chan to take a bath. Out of curiosity, Sho-chan kept staring at Yume's body. She also realizes and is also partly anxious, so she teaches Sho-chan what "adults do". That afternoon, when Sho-chan finished taking a nap, Yu-kun asked to sleep with her. With his mischievous nature, he constantly groped Yume's body while she was sleeping. And regardless of Sho-chan being around, he thrusts his cock into Yume's pussy and makes love to her. In the evening, the two brothers competed to see whose cock was better, and Yume had to referee for the two of them. And she compares the two by... see whose cock fucks more...!!