女子 じょし こう せいビジネスじゃありませんでした
joshikōseibijinesujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 女子高生ビジネス

1. It wasn't a high school girl's business.; It wasn't a business run by high school girls.

Past/Perfective
Negative
Polite
Terminal Form