かわのなつだいだいであれば
川野夏橙であれば
kawano natsudaidaideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of かわのなつだいだい

1. If it were Kawano Katsuren; If Kawano Katsuren were the case

Ba Conditional
Usually Written in Kana