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 she's a genius who won a 
national contest right after she came here.
Und sie ist ein Genie. Sie gewann direkt 
nach ihrer Ankunft einen nationalen Contest.
Y es un genio. Ganó un concurso 
nacional apenas entrar aquí.
Y es un portento. Ganó un concurso 
nacional nada más entrar aquí.
Dès son arrivée, elle était si douée 
qu’elle a remporté les concours nationaux.
E ela é um gênio. Venceu um concurso
nacional logo depois de ter vindo para cá.