Though Mrs. Kurusawa behaves cheerfully, a sense of loneliness lingers around her. In truth, she spotted her husband alone with another woman. When confronted, he claims it was merely a chance encounter with a tutoring student, attempting to evade the issue. However, her sharp female intuition begins to suspect infidelity, and soon a rift forms between the couple. This psychological shift and the instability in their relationship add depth to the story.