I feel like my husband is overly confident about his sexual performance. He's good-looking, financially stable, and has had many relationships in the past, so he carries unnecessary self-assurance. Fumino, however, is deeply dissatisfied with their intimate life. Watching him fall asleep contentedly after sex, she finds her affection for him gradually fading.
She wants to tell him that having slept with many women doesn't automatically make someone skilled, but she lacks the courage to speak up and continues enduring in silence. While marriage involves more than just sex, she feels physically and emotionally unfulfilled, and this emptiness persists day after day.