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...
It's because you're truly considerate 
and grateful to each other
Ihr seid rücksichtsvoll zueinander ...
Son consideradas entre ustedes,
Sois consideradas las unas con las otras,
C’est parce qu’on tient à l’autre
et qu’on se respecte mutuellement
È grazie al fatto siete veramente
gentili e grati l'un l'altro
Vocês são atenciosas uma com a outra