A young woman attends high school and takes the same train as Hidenori every morning. Her true identity remains unknown. Hidenori was troubled by a single hair that grew from her mole, causing him great distress. Although he found it difficult to approach her initially, he eventually mustered the courage to confront her when he believed she lacked friends to draw attention to this issue. At first, she felt embarrassed but later expressed gratitude for his intervention.