The protagonists hear that they'll be shooting a PV, but it turns out to be a promotional video for Nagarekawa tourism rather than a music video for themselves.
I don't know what your 
uncle will say, though.
Ich weiß aber nicht, was dein
Onkel dazu sagen wird.
Aunque no sé qué dirá tu tío.
Aunque no sé qué dirá tu tío.
Je ne sais pas
ce qu’en pensera ton oncle.
Mas não sei o que seu 
tio falará a respeito.