The ones harassing Riko and her friends were "former" student council president Enomoto Yuiko (Eno), whose work was stolen by Maki, and her friend and student council treasurer Mizushima Sayori (Sayo). Declaring war on Riko and her friends, Eno and Sayo sneak into the student council room where they discover materials related to the love lab.
Meanwhile, Maki takes on all the responsibilities of the student council herself and collapses from the strain...
I need to get rid of these 
before anyone sees them.
Tengo que deshacerme de esto 
sin que nadie me vea.
Tengo que deshacerme de 
esto sin que nadie me vea.
Il faut que je m’en débarrasse
 avant que quelqu’un ne les voie.
Eu preciso me livrar disso sem ninguém ver.