Manjiro, a younger brother who was staying with his older brother and his wife, wanted to do something about his beautiful sister-in-law Anna. One day, when Anna got on her bicycle to go shopping, Manjiro secretly posted on a message board that she was a "wife who wants to be raped." Then, while shopping, Anna was raped by a group of strange men. However, her frustrated body felt the opposite of what she wanted, and Manjiro, who knew the whole story, played with her sensitive body when Anna returned home...