The character humorously discusses how her mood changes during her menstrual cycle, suggesting that she prefers solitude in the initial days. She expresses a desire for friends to understand her need for space during this time, indicating that it can be overwhelming for her. This lighthearted conversation hints at deeper themes of emotional struggles and the importance of communication in relationships.
To signal her mood to others, she suggests wearing a red hat, which becomes a playful symbol for her friends to recognize when to give her space. This clever idea showcases her attempt to maintain connections while also establishing boundaries, emphasizing the complexities of human emotions and interactions throughout the book "Norwegian Wood."