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...
Must be materials for tomorrow's meeting.
Deben ser materiales para 
la reunión de mañana.
Deben de ser materiales para 
la reunión de mañana.
Ce sont les documents pour la réunion des chefs
 de comités des élèves de demain.
Devem ser materiais da reunião de amanhã.