HZGD-130 Sweaty Busty Wife Raped By Peeping Brother-in-law Sana Matsunaga. The film tells about a small family including Matsunaga who lives happily with her husband and her younger brother. Matsunaga's husband is a successful man in complete contrast to his younger brother, who is gentle but because he is not good at studying, he only stays at home to help his sister-in-law with housework. Nothing would have happened if his younger brother had not discovered the small window right above their bedroom. That day, while accidentally cleaning the upper floor, he accidentally saw his sister-in-law writhing around in her extremely sexy pajamas to provoke her brother to fuck her. However, his brother only wanted to sleep without touching his sobbing sister-in-law in the normal desire that any woman would want. After that day, his younger brother continued to snoop like that, and one day while his sister-in-law was taking a nap he... .