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.
want to endure that public humili-whatever.
diesem öffentlichen 
Demütigungsdings aussetzen will.
quisiera aguantar esa no-sé-qué pública.
por esa humillación pública 
o como quieras llamarlo.
querer encarar essa humilhação ou sei lá o quê.