Brothers Sou and Miu joined the company at the same time together, and the two quickly became close and soon got married. Sou is used by his brother to help him join the company. Sister-in-law Miu is Sou's direct superior, she is very interested in this brother-in-law. This time Sou and his sister-in-law went on a business trip to a countryside. Due to the sudden heavy rain, the high-speed boat stopped operating, so the two could only spend the night here. The room was full everywhere, so Sou and his sister-in-law had to share a room. Looking at the beautiful sister-in-law who was wet, the thin shirt clung to her body, revealing a bewitching curve that made Sou almost lose her mind. He hugged his sister-in-law, vigorously occupying her body. Thought that she would be resisted, but no, her sister-in-law agreed to belong to Sou only today, allowing him to fuck her to her heart's content, and freely cum into her uterus!