Haruki is entranced by Setsuna's singing on the rooftop, and plots to get her to join the Light Music Club no matter what.  But she hates standing out, so convincing her is incredibly difficult.  Meanwhile, the club has an even bigger problem.  The elite student from Music Room 2 he was trying to persuade to join his club as the keyboard player isn't a member of the Music Class, it's a mysterious person whose class and identity are a total unknown.
Why did I never realize 
something so simple?
Weshalb ist mir so was 
Einfaches nie eingefallen?
¿Por qué nunca me di 
cuenta de algo tan simple?
¿Cómo pude no darme 
cuenta de algo tan simple?
je suis bête de ne pas avoir 
pensé à ça plus tôt…
Por que eu não percebi uma coisa tão simples?