The Caerula Adamas plot a way to destroy the mysterious Battle Lovers. They also want to destroy the Defense Club, so as to cut down on club expenses. Thus, they declare that if the club members' scores on their final exams do not meet the average, the club will be dissolved. The Defense Club reluctantly gets to studying. Meanwhile, the student council also tries to scout the financially savvy Naruko to be their treasurer. When Gero offers him a salary during negotiations, Naruko casually agrees to leave the Defense Club. Soon, a monster appears, and the four remaining Battle Lovers must struggle to defeat it themselves.
Naruko's high grades mean our
second year guys averaged out.
Narukos gute Noten werden dafür sorgen,
dass das zweite Jahr ausgeglichen ist.
Con las buenas calificaciones de Naruko, los 
de segundo habrán alcanzado el promedio.
Con las buenas notas de Naruko, los 
de segundo habréis alcanzado el promedio.
pour les membres en première,
les résultats de Naruko compensent.
Facendo media con i voti alti di Naruko, 
anche il gruppo del secondo anno è sopra la media.
As notas altas do Naruko nos garante
 a média necessária pro segundo ano.