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.
All you've been doing is lecturing me!
Du hältst mir die ganze Zeit nur Vorträge!
¡No haces más que sermonearme!
¡Lo único que haces es echarme la bronca!
Parce que je n’entends 
que tes sermons depuis tout à l’heure !
Você só ficou me dando sermão!