ヤミ専従 せんじゅうではありませんでした
yamisenjūdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of ヤミ専従

1. Was not a dedicated, full-time, undercover operative.; Was not a specially assigned, covert employee.

Past/Perfective
Negative
Polite
Formal Register