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.
You're the one we have 
to cover for most of all.
Für dich müssen wir am öftesten einspringen.
Eres al que más cubrimos.
Eres al que más cubrimos.
C’est toi qu’on doit
le plus épauler.
Parla quello che ha più bisogno di aiuto.
A gente sempre precisa
 dar cobertura pra você.