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.
Your plan can't work anyway, you know.
Euer Plan kann sowieso nicht klappen.
De todos modos, tu plan no funcionará.
De todos modos, tu plan no funcionará.
De toute façon, 
votre projet ne tient pas la route.
Sabe, o plano de vocês não vai funcionar.