Yaya Suo, a top student in her second year, excels in all subjects and gracefully completes every task she is asked to do. Ichigo Hinamori, a first-year student, has always admired her senior. However, one day, Ichigo witnesses Yaya sobbing alone in the nurse's office. In a moment of surprise, Ichigo hugs her, and from that point on, Yaya starts to follow her around, saying, "Make me act like a spoiled child."