GVG-433 When the whole family is away

A couple decided to introduce themselves to the husband's parents at the request of the mother-in-law. The reason my mother-in-law asked me to come home was because of my husband's brother. A family is worried about their older brother, who locks himself in his room and refuses to come out. However, in order not to be noticed by the family, the older brother hid in the dark and brutally assaulted the younger brother's wife, while at the same time committing lewd acts non-stop.