[Suteisi]

Did you think that maybe Ayu and Shuya have a brother/sister relationship ??

My brother and I are very close, we always laugh together, I punch him humourously just like Ayu does to Shuya... Ayu often says her tour group and staff is like her family, so it's not surprising she is close to some of them, especially her dancers.

I'm sure if Ayu and Shuya really wanted to be together, they would be together already. So I don't think there's anything more than good friendship/sibling relationship between them.