GVG-433 The Tragedy That Happened At My Husand's Parent's House, Aya Sakurai

A couple who decided to return to their husband's parents' home at the request of their mother-in-law. The reason her mother-in-law asked her to come home was because of her husband's brother. A family worried about their older brother who shut himself in and wouldn't come out of his room. However, in order not to be noticed by his family, the older brother hides in the shadows and violently assaults his younger brother's wife, and repeats sexual acts relentlessly.