jeongyeon was an autistic girl, her best friend was nayeon, jeongyeon was shy and quiet and whenever something embarrassed her, she hid her head in nayeon's neck.

they were in math class and the teacher asked jeongyeon to answer an exercise and embarrassed jeongyeon hid her head in nayeon's neck, due to jeongyeon's autism she was an introvert and had anxious attachment, she couldn't make eye contact for more than a second, but with nayeon I could hold on.