A note asking for hairstyles popular among boys is found in the suggestion box.
In order to fulfill the request for the opinions of boys from Southern Middle School, Riko searches her cram school for boys from Southern Middle School and comes up with Nagi.
We'll never run out of 
subjects for our love lab.
Nunca se nos terminarán los temas 
de la investigación de amor.
Nunca se nos terminarán los temas 
de la investigación del amor.
Ça nous fera autant de sujets à traiter
 dans notre étude de l’amour.
Nós nunca vamos ficar sem assuntos
 para o nosso laboratório.