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.
And that isn't like you.
Und das passt nicht zu dir.
Y digo que no es propio de ti.
Y lo que te digo es 
que no es propio de ti.
Et moi je dis que 
ça ne te ressemble pas.
E você não costuma ser assim.