Kessoku Band has their first song and they're ready to play their next concert, but Seika isn't so easily convinced.
We just need to convince Sis to take us on!
!كلّ ما علينا هو إقناع أختي بتبنّينا
Wir brauchen nur meine
Schwester zu überzeugen.
Il suffit de convaincre ma frangine.
Et pour ça, faut s’entraîner !
Dobbiamo solo fare in modo che 
Seika ci prenda sul serio!
Só precisamos convencer
a minha irmã a nos aceitar!
Надо просто убедить сестру,
чтобы дала нам выступить!