Yoarashi ni Warau

Class 2-C Homeroom Teacher, Ogino, is persecuted by her class. As part of her daily routine, she writes letters to a student who doesn't come to school, about her hopes for her ideal class. She filled the letters with lies to protect her mental image. Then one day, she receives a letter from the student; Yoarashi has come to school. While Ogino is anxious about her lies being exposed, Yoarashi tells her, "I came to help you, Ms. Ogino." Thus, beginning their "education!"

(Source: MANGA MILLION)