Oshima moved in with his son and daughter-in-law in Tokyo. However, he had always struggled to get along with Sumire, his son Tetsugaku's wife, because she was unsociable and always had a grumpy look on her face. One day, Tetsugaku was injured and hospitalized. In the midst of their awkward life alone together, Oshima played a cruel prank on Sumire, telling her, "Your husband died at the hospital..." To his surprise, the usually expressionless Sumire made an incredibly shocked face, her eyes nearly popping out. Intrigued by this reaction, Oshima continued to play prank-like tricks to see more of her funny faces, but she eventually returned to her grumpy self. Finally, Oshima decided to resort to a suspicious drug... #YoroP
