The "elite student in music room 2" turns out to be Haruki's delinquent classmate, Kazusa Touma.  With his characteristic pushiness, he tries to get her to join the light music club.  But his pushiness backfires, and only makes her more annoyed.  Setsuna gets irritated... no, involved, and approaches Kazusa secretly.
I'm here to ask you to join 
the Light Music Club.
Ich bin hier, um dich zu fragen, 
ob du dem Club für Unterhaltungsmusik beitrittst.
Vine a pedirte que te unas 
al Club de Música Pop.
He venido para pedirte que te 
unas al club de música pop.
Vim pedir que você entre
no Clube de Música Popular.