Kana Morisawa's husband, Kazuya, has become emotionally withdrawn due to work-related stress and can no longer bring himself to go to the office. Shut inside the house, he spends his days staring blankly at the walls. Desperate to see him smile again, Kana tirelessly supports him with unwavering devotion. One day, Kazuya's younger brother, Kazuhiro, visits out of concern for his brother's condition. This visit begins to stir unexpected changes within the family dynamic...