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.
I am tired, but I won't sleep well if 
the club is dissolved because of me.
Bin ich auch, aber ich werd nicht gut schlafen,
wenn der Club wegen mit aufgelöst wird.
Estoy cansado, pero no dormiré bien 
si disuelven el club por mi culpa.
Estoy cansado, pero no dormiré bien 
si disuelven el club por mi culpa.
Ça me gonfle, mais je ne voudrais pas
que le club ferme par ma faute.
Sono stanco, ma non riuscirei a dormire sonni 
tranquilli se il club venisse sciolto a causa mia.
Eu estou cansado, mas não iria dormir bem
 se o clube fosse desfeito por minha culpa.