Kiyo after managing to lose Zatch and Ponygon goes to school. Once there, the teacher Touyama tries to give Kiyo a failing grade by asking him what is his cat's name. Kiyo manages to figure it out, but Touyama reveals he has a secret weapon. He introduces Miss Wriggle's who shall teach the class poetry. Miss Wriggle asks the class to make a poem that expresses their love sickness. Suzy does a poem on Kiyo, and everyone else does a poem about their favorite hobbies. Kiyo however was unable to make a poem to express his love sickness and fails. Everyone in the class becomes devastated believing it is the apocalypse. Touyama laughs happily as Kiyo receives his first failing grade, and Kiyo swears vengeance. They head home while Zatch and Ponygon are pursued by an angry Naomi.
Kiyo va a scuola, una volta arrivato il professor Touyama prova a fargli prendere un brutto voto chiedendogli il nome del suo gatto, ma Kiyo riesce a rispondere. Allora usa la sua arma segreta: la signorina Moina, una nuova insegnante che gli fa scrivere una poesia.
Kiyo tras lograr bajar de Zatch y Ponygon va a la escuela. Una vez allí, el maestro Touyama intenta dar una mala calificación Kiyo pidiéndole lo que es el nombre de su gato. Kiyo se las arregla para averiguarlo, pero Touyama revela que tiene un arma secreta.
ハザマの世界から人間界に戻った清麿は、いつものように学校へ。ところが天敵である歴史の教師・遠山の様子が何だかおかしい。実は彼には、国語のモンモン先生という秘密兵器があったのだ。ガッシュとウマゴンが、そのモンモン先生のアシスタントに。そしてモンモン先生は、モンモンダンスを踊り始める！
