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.
This is probably it for 
Setsuna-chan joining, then.
Das war's dann wohl 
mit Setsuna-chans Beitritt.
Probablemente hasta aquí 
llegamos con Setsuna-chan.
Pero creo que aquí acaba 
nuestra historia con Setsuna-chan.
Cela remet en question 
la participation de Setsuna, non ?
Então, acho que podemos dizer
adeus à Setsuna também.