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.
Well, I was just wondering the same thing...
Nun, das hab ich mich auch gefragt.
Justo pensaba lo mismo.
Pues yo me hago la misma pregunta...
C’est justement la question 
que j’étais en train de me poser.
Estava me perguntando a mesma coisa...