しろえりマンガベイであれば
白襟マンガベイであれば
shiroerimangabeideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of しろえりマンガベイ

1. If it were a white-collar manga bay; If it is a white-collar manga bay

Ba Conditional
Usually Written in Kana