A married woman who wants to be raped - The secret desire of her sister-in-law who has a desire to be cuckolded

The Suzumiya couple have been married for five years, but their relationship has not cooled down, but their nighttime affairs are beginning to stagnate. Her husband tries to break the rut by cosplaying and other means, but his wife Mari is in a state of frustration. His brother-in-law Shinji, who occasionally comes to visit, is seen through, and he is suddenly pushed down. Mari, who secretly hopes that she will be raped by the strong Shinji body, resists, but then she lets out a moan...