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.
Kitahara, what did you come here to say?
Kitahara, aus welchem Grund bist du hier?
Kitahara, ¿a qué viniste?
Kitahara, ¿para qué has venido?
Kitahara…
Kitahara, por que você veio aqui?