[Machine Translation] Tsumugi, a fourth grader, is a strong and slightly shy girl who does housework for her mother. One day after school, she writes a haiku on the blackboard in an empty classroom as if to vent her frustration. Tsumugi, who was so confused by her unexpected words, left the classroom as if she were running away, leaving the words on the blackboard as they were. However, the next morning, before the first day of school, the classroom was in an uproar! What was it? Who on earth wrote it and why?