After receiving news that her father-in-law's chronic illness had worsened, Sora and her husband decided to live together. However, this was a clever trap set by her father-in-law, who had his sights on Sora's body. He gradually drives Sora into a corner with his relentless sexual harassment, increases her burden with his unreasonable selfishness, and gradually cuts into the time they spend together as a couple... Slowly and surely driven into a corner by his cunning tactics, Sora eventually becomes unable to bear the loneliness and begins to indulge in masturbation, just as her father-in-law had planned. When Sora has orgasmed, her father-in-law approaches her with a grin on his face...