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'm keeping a close watch on the student 
council's budget and your allowance.
Vigilaré bien el presupuesto del 
consejo estudiantil y tu paga.
Vigilaré bien el presupuesto del 
consejo estudiantil y tu paga.
Je gère parfaitement le budget du conseil.
 Et aussi tes économies.
Eu estou de olho no orçamento do 
conselho, e na sua mesada.