The homeroom teacher of Class 2-C, Ogino, was being persecuted by her students. She had a daily routine of writing letters to a student who was absent from school, expressing that her class was a hopeful and ideal place. By confronting this "lie" in her letters, she managed to maintain her sense of self. One day, the absent student, Yara, appeared at school after receiving one of her letters. As Ogino panicked at the thought of her lie being exposed, Yara said, "I came to help you, teacher." Thus began their journey of "education."