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...
W-Well, we won't have anything to worry 
about with you in charge of our money.
Bu-bueno, no tendremos de qué preocuparnos 
contigo a cargo del dinero.
Bu-bueno, no tendremos de qué 
preocuparnos contigo a cargo del dinero.
B-Bom, nós não temos nada para nos
 preocupar com você cuidando do dinheiro.