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.
I'm embarrassed to admit that 
I know nothing about karuta.
Me avergüenza admitir que 
no sé nada del karuta.
Me avergüenza admitir que 
no sé nada de karuta.
Eu estou envergonhada de admitir
 que não sei nada sobre karuta.