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.
Just so we're clear, 
this is for Ogiso.
Nur damit das klar ist, das war für Ogiso.
Que quede claro que esto es por Ogiso.
Que quede claro que esto es por Ogiso.
Je préfère te le dire, 
je le fais pour Ogiso.
Só para não haver mal-entendidos, é pela Ogiso.