A secret relationship between me and my son-in-law—one I could never tell my daughter. Even now, we sneak moments together behind her back, and our bond grows deeper every day. This is the story of how I first became intimate with my son-in-law. It all began during a hot spring trip I took with my daughter and her husband. My daughter always treated her husband harshly, and he obediently endured it in silence. I kept telling her that marriage shouldn't be like that, but her attitude never changed. I felt sympathy for my kind son-in-law and wanted to offer him whatever comfort I could. One day, I was alone in the outdoor bath when suddenly he appeared and confessed his feelings, then kissed me. I was shocked and resisted out of surprise and disgust, but he pulled me into his arms forcefully. I couldn't believe a man like him could desire someone like me—an older woman—and I stood there dazed. That night, while I was sleeping beside my daughter, he came into the room and made me climax right there with her lying next to us. His mischievous grin that night remains burned into my memory. Strangely, I found myself falling for him—hating him yet craving him all the more. The next morning, I woke up early and went to his room next door, walking straight into his arms.