The deal was to get 5 new members for the Karuta club.  Chihaya has to figure out a way to keep the room and deal with the band club.
When did you do that?!  
Wow!  You're so grown-up!
¡¿Cuándo fue eso?! ¡Qué responsable!
¡¿Cuándo ha sido eso?! ¡Qué responsable!
Quando você fez isso?!
 Nossa! Você é tão adulta!