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...
Enomoto-san works so hard, but 
she needs to learn to calm down.
Enomoto-san trabaja muy duro, 
pero tiene que aprender a calmarse.
Enomoto-san trabaja muy duro, pero 
tiene que aprender a calmarse.
Enomoto fait de son mieux,
 mais elle est trop agitée.
A Enomoto-san se esforça tanto... 
Mas ela tem que aprender a se acalmar.