白襟 しろえりマンガベイじゃありませんでした
shiroerimangabeijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 白襟マンガベイ

1. Was not a white-collar manga bay.; Wasn't a sophisticated manga enthusiast.

Past/Perfective
Negative
Polite
Terminal Form