Yuzuko and Momoko line up to get sweet potatoes from the school store. Momoko runs into Nagiko there, and through a serious of events, Momoko ends up believing she's being disrespectful to girls in the other grades. Meanwhile, the occult club tries to solve a riddle...
If we build too many walls between the grades,
Wir wollen nicht zu viele Wände
zwischen den Jahren bauen,
Intentamos llevarnos bien 
entre todos los cursos
Intentamos llevarnos bien 
entre todos los cursos,
C’est dur de former un groupe
si on dresse un mur
Se costruissimo dei muri tra i diversi anni,
Tentamos não colocar empecilhos 
entre os alunos de diferentes séries