The day I sensed something strange about my wife, I placed a voice recorder in our room to reassure myself. When I listened to the recording, I heard a man's voice—along with my wife's laughter—coming from somewhere inside. My breath caught in my throat, but I kept playing it. Gradually, I could hear my wife's breathing grow ragged, tightening the pain in my chest. Accompanied by the sound of bodies colliding fiercely, her moans grew louder and more intense. I quietly pressed the stop button and buried my face in my trembling hands.