Yuri started investing out of curiosity without telling her husband, but it went wrong, and she ended up with 5 million yen in debt. She couldn't tell her husband, so she decided to ask his father for advice... Her father-in-law agreed to pay off the debt, and she was happy for a moment. In return, her father-in-law wanted her body. With her weakness exposed, Yuri was forced to offer her body to her father-in-law...